Northern Uí Neill
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Background on the Northern Uí Neill

The sons of Niall of the Nine Hostages, Eoghan, Conall [Gulban], and Enda, travelled north from the kingdom of Connacht into the western and northern regions of the kingdom of Ulster (county Donegal). It was here in the 5th century that the Cenél Eóghain and Cenél Conaill began to establish themselves as overlords in northwestern Ulster. The Cenél Eóghain established their power base at Inishowen and their capital at Aileach. The Cenél Conaill centered themselves around the rich area of Magh Ithe, in the valley of the river Finn. The two clans alternated as kings of the North up to the 8th century. The Northern Ui Neill also alternated with their southern cousins as so-called 'sovereigns of Ireland' into the 10th century.

In the 8th century a series of victories were gained by the Cenél Eóghain over the Cenél Conaill in Magh Ithe (east Co. Donegal), splitting their power between the territories of Fanad, in the north, and Tir nAeda, in the south. By the beginning of the 9th century the Cenél Eóghain were the dominant Northern dynasty, as they spread their influence east into modern county Derry, pushing aside the Cruithin east of the river Bann, gaining control over the Ciannachta of mid-Derry, and steadily encroaching on the Airgiallan tribes of Ui Macc Uais. The dominance of the Cenél Eóghain continued as they drove further south, subjugating other Airghiallan tribes, and by the 11th century the Cenél Eóghain had moved their power base from Aileach to that near Tullahogue in modern day county Tyrone (named from Tir Eóghain, or Tir Owen). By the 12th century much of the area of Magh Ithe, and later that of Inishowen, was taken by the O'Donnells and O'Dohertys of Cenél Conaill. By the mid 13th century a leading family of the Cenél Eóghain, the Mac Lochlainn (McLoughlin), began to lose prominence to their kinsmen, the Ó Neill.

There are many notable northern Uí Neill clans which included O'Neill, O'Donnell, MacLoughlin, O'Donnelly, O'Doherty, O'Cannon, O'Muldory, O'Kane, O'Gallagher, O'Gormley, O’Flaherty or O’Laverty, O'Hamill, O'Lunney, O'Carolan of Clan Diarmada, O'Quin, O'Hagan of Tullahogue, O'Devlin of Munterdevlin, among many others. Click here for a Physical Map of the Ulster region.


Cenél Eóghain
Eoghan was the son of Niall who established his kingdom in Innishowen, centered at Aileach. Eoghan's sons included Muiredach, Binech, Fergus, Óengus, Dallán, Cormac, Feideilmid, Ailill, Echen, Illann, and Eochaid. Some of the clans of the Cenél Eóghain included those of Clan Neill, Clan Domnaill, Clan Birn, Cenél Fergusa, Cairrge Brachaidhe, Cenél Binnigh, Cenél Moen, Cenél Fearadhaigh, Cenel Tigernaich, Clan Conchobhair, Clan Diarmatta.

The annals cite for the northern Uí Neill:

For further Cenél Eóghain reference, also see northern Uí Neill kings


Clan Neill, included the dominant Cenél Eóghain septs of Ó Neill and Mac Lochlainn, as well as many other notable septs. The name O'Neill is said to originate with Niall Glúndub, a 10th century ancestor of the Uí Neill line. The reference here to Clan Neill refers to Neill Caille, his grandfather. Ó Neill and Mac Lochlainn are anciently cited as kings of Aileach, a base of power at the lower end of the Inishowen peninsula. By the 11th century the Ó Neill had established a seat of power at Tullahogue, co. Tyrone, and later became the dominant sept of the Cenél Eóghain.

An early clann Neill (Mac Lochlainn) genealogy:   (Rawlinson)
Domnall m. Ardgair m. Lochlaind m. Muiredaich m. Domnaill m. Muirchertaich m. Néill Glúnduib m. Áeda Findléith m. Néill Caille m. Áeda Oirdnide m. Néill Frossaich m. Fergaile m. Máele Dúin m. Máel Fithrich m. Áeda Uaridnaich m. Domnaill m. Muircherdaich m. Muiredaich m. Éogain m. Néill.

An early Cenél Eóghain (O'Neill) genealogy:   (O'Clery)
Eoghan m Neill oicc m. Neill moir m. Aedha m. Domhnaill m. Briain catha duinn m. Neill ruaidh m. Aeda m. Muircertaigh muighe lugaidh m. Taidhg glinne m. Conchobair na fiodhbaide m. Flaithbertaigh locha h-adair m. Domhnaill m. Aedha athlamhain m. Flaithbertaigh an trostain m. Muircertaigh mhidhigh m. Domhnaill arda macha m. Muircertaigh na ccocal ccroicenn m. Neill glunduibh m. Aedha finnleith m. Neill caille m. Aedha oirdnide m. Neill frosaigh m. Ferghail m. Maile duin m. Maile fithrigh m. Aedha uairidhnigh m. Domhnaill ilcealccaigh m. Muircertaigh m. Muiredaigh m. Eoghain m. Neill naighiallaigh.

The annals cite: (see above citations for Cenél Eóghain)


Clan Domnaill, of Cenél Eóghain. The name of O'Donnelly is said to derive from a great-great grandson of Domnaill, that is Donghaile. They were cited as chiefs of Feardroma, perhaps near Ballydonnelly, in county Tyrone. There is also a Fer Droma Lighen, a name remembered in the townland of Drumleene, Clonleig parish, barony of Raphoe, county Donegal. Of the same region, the sept of Cenél n-Echach Droma Lighen are cited in the Book of Ballymote and the Book of Lecan, descended from Eocho, son of Domhnall, son of Muirceartach Mac Earca.
The O'Donnellys are later cited at Castlecaulfield, alias Ballydonnelly (Baile Ui Donngaile), near Dungannon, in co. Tyrone.

The name Ua [F]laithbertaigh is associated as a king of Clann-Domhnaill in the Annals. Note: Not to be confused with Flaithbertaigh, king of West Connacht.

An early Clan Domnaill genealogy:   (Rawlinson)
Áed m. Néill m. Máel Sechnaill m. Máel Ruanaid m. Flaind m. Domnaill m. Áeda Findléith m. Néill Caille m. Áeda Oirdnide m. Néill Frossaich m. Fergaile m. Máele Dúin m. Máel Fithrich m. Áeda Uaridnaich m. Domnaill m. Muircherdaich m. Muiredaich m. Éogain m. Néill Noígiallaig.

An early Fir Droma Lighen genealogy: (Rawlinson)
Gilla Meic Liac m. Echthigirn m. Donngaile m. Cellacháin m. Domailén m. Donngaile m. Sechnassaich m. Cellaich m. Echdach m. Domnaill m. Áeda Findléith m. Néill Caille m. Áeda Oirdnide.

The annals cite:

Clan Birn, descended from Bern, son of Ruadrí, son of Murchad, a quo Muinter Birn, in the line of Cenél Eóghain, according to the genealogies in Rawlinson B502. In addition Rawlinson points to a son of Bern named Anféid, a quo Tellach n-Anfida, who was possibly the namesake for Tellach Ainbhith. According to O'Dugan (Topograhipcal Poems), the MacRuaidhris were among those over Teallach Ainbhith and over Muintir-Birn. O'Hart (Pedigrees) cites the name MacRuaidhri as MacRory or MacRogers, over the same territories, districts which he places in the baronies of Dungannon and Strabane, county Tyrone. Woulfe (Irish Names) agrees and also cites the family of MacRuaidhri as erenaghs of Ballynascreen, in County Derry. O'Hart goes on to cite, under the county Armagh, Muintir Birn, some of whose descendants anglicized their name Bruen, was a district in the south of the barony of Dungannon, adjoining the territory of Trough in county Monaghan.
In Murphy surname history, there is mention of the surname Mac Murchadha (MacMurphy, Murphy), originally based in present-day Co. Tyrone, in the area known as Muintir Birn, but were driven out by the O'Neills and settled in south Armagh. The reference seems corroborated in various entries in the Annals, although the name Mac Murrough seems to be applied there, which may have later been translated into MacMorrow or MacMurray.
In Colgan's Trias Thaumaturga, it mentions Ui Briuin, now Muinter Birn, alias Ui Briuinia Aquilonaris, in county Tír Eoguin, and diocese of Ardmache. This is an apparent reference to Ua mBriúin Archaille in Ui Chremthaind, a branch of Siol Colla dá Chrich, who were also noted in the Dungannon area.
Note: Not to be confused with Muintir Birn, O'Beirne of Ui Briúin na Sinna, in county Roscommon.

An early Clan Birn genealogy:   (Rawlinson)
Cú Lacha m. Con Chaille m. Muredaich m. Fergail m. Muiredaich m. Birnn m. Ruadrach m. Murchada m. Máel Dúin m. Áeda Alláin m. Fergaile m. Máel Dúin m. Máel Fithrich m. Áeda Uaridnaich m. Domnaill m. Muircherdaich m. Muiredaich m. Éogain m. Néill Noígiallaig.

The annals cite:


Cenél Fergusa, of the Cenél Eóghain, with territory later held south of the Sperrin Mountains in Derry. Fergus was a son of Eoghan, and ancestor of the O'Hagans, O'Quins, Ua Mael Fhabaill (Mulfoyle, et al) and O'Mallons (O'Mellans) among others. Ua hOgain (O'Hagan) and O'Maelfhabhuill are cited as chiefs of Cinel-Fearghusa in the Annals. Ua Mael Fhabaill is also noted as chiefs of Cairrge Brachaidhe, cited in the northwest part of Inishowen. O'Mellan's country was said to be originally in southernmost Co. Derry, and the sept is later noted in Co. Tyrone.

An early Cenél Fergusa genealogy:   (Rawlinson)
Ragnall mc Gillai Áeda m. Flaind m. Gillai Epscoip Éogain m. Ócáin m. Cináeda m. Máelgairb m. Ailella m. Cummascaich m. Donngaile m. Cuanach m. Conaill m. Brachaidi m. Diarmata m. Feideilmid m. Cairpre m. Cóelbad m. Fergusa m. Éogain m. Néill Noígiallaig.

The annals cite:


Cairrge Brachaidhe. Perhaps named from Brachaidi mac Diarmata (or he named from it), the Cenél Fergusa held this territory at an early date. The Book of Lecan cites Diarmait, of Cenél Fergusa, rí Cairrce Brachaide. The sept of Ua Mael Fhabaill (Mulfaal, Mulfavil, MacFael or Mac Paul) are cited in the Annals as chiefs of Carrichbrack (Carrickbraghy) in the barony of Inishowen West, County Donegal. The Mulfaal sept claim descent from Fergus, grandson of Niall of the Nine Hostages, and are thus part of the Cenél Fergusa. O'Hogain (O'Hagan or Hogan) is cited as a chief in this region by O'Dugan (Poems).

The annals cite for Cairrge Brachaidhe:


An Bredach, the territory of an Breadach (the Bredach, na Brétcha, na Brédcha, or Brédaigh) comprising the parishes of Upper and Lower Moville, barony of Inishowen West, county Donegal, and held by the sept of O Duibh Dhíorma (e.g. O'Duvdirma, O'Dierma, Dermond, or MacDermott of Bredagh Glen), a branch of Cinel Eoghain.
An Ua Duibhdirma is cited also as king of Fordruim in the Annals, perhaps Fordrum naer Greencastle in the parish of Lower Moville, barony of Inishowen, county Donegal.
Note: Not to be confused with Bredagh in Tirawley, Co. Mayo, where O'Toghda was chief.

An early na Brétcha genealogy:   (Rawlinson)
Domnall m. Áeda m. Cuind m. Cathail m. Duib Dírma m. Cathmoga m. Ruarcáin m. Duib Dírna m. Bicín m. Cuangaile m. Immainich m. Condálaich m. Toimtig m. Findchraid m. Fínáin m. Cremthaind m. Feidelmid m. Éogain m. Néill.

The annals cite for Bredagh Glen and Dhuibh Dhíorma:


Cenél mBinnigh, of the Cenél Eóghain, descendants of Eochu Binnigh, son of Eoghan, included the O'Hamills, who advanced into Airghialla territory, northwest of Lough Neagh, as early as the 6th century. According to the Book of Ballymote, their branches included Cenél mBinnig Glinne (valley of Glenconkeine, barony of Loughinsholin, county Derry), Cenél mBindigh Locha Droichid (east of Magh Ith in Tirone), and Cenél mBindigh Tuaithe Rois (east of the Foyle, in ancient Tirone). Several branches of the Cenél mBindigh Locha Droichid are noted, in th Index to the Four Masters, in the north of the barony of Loughinsholin, co. Derry.

An early Cenel Binnich Tilcha Óc genealogy:   (Rawlinson)
Garbíth m. Cináeda m. Gillai Cuimne m. Con Bethad m. Domnalláin m. Garbíth m. Uaréirge m. Máel Fábaill m. Daithgile m. Con Galann m. Elgonaich m. Cobraid m. Máel Dúin m. Faílbe m. Ultáin m. Domnaill m. Laisreáin m. Echach Binnich m. Éogain m. Néill Noígiallaig.

The annals cite:


Cenél Moen, of the Cenél Eóghain, from Máién (Moen, Moain, or Múain), son of Muiredach and grandson of Eoghan. Originally of Tyrone?, and then Magh Itha in the barony of Raphoe, county Donegal, the Cenél Moen were driven across the Foyle by the O'Donnells to the northeast of Strabane in the 14th century. Moen was the great-grandson of Niall [of the Nine Hostages] whose descendants included Domnall O'Gairmleadhaigh (O'Gormley), king of Cenél Eóghain in the 12th century. Other surnames included O'Patton (Peyton) and O Luinigh (or O'Loony). For O'Gormley also see Fir Maige Itha.

An early Cenél Moen genealogy:
Conchobar m. Mail seclainn m. Sitrec m Concobair m. Neill m. Domhnaill m. Edalaigh m. Conchobhair m. Domhnaill m. Menman m. MicRaith m. Gairmleghaigh m. Cathmaoil m. Mail mithidh m. Dalbaigh m. Gairmlegaigh m. Ferdalaigh m. Tendalaigh m. Edalaigh m. Faelain m. Colmain m. Maein m. Muiredaigh m. Eogain m. Neill.

The annals cite:


Cenél Fearadhaigh, of the Cenél Eóghain, Feradach was the son of Muiredach, and great-grandson of Niall whose descendants included the MacCawells (MacCathmhaoil), as well as the Irish Campbells, of Cenél Fearadhaigh [Theas] in the Clogher area of Co. Tyrone. MacGilmartin were chiefs in the barony of Clogher, and one was chief of Cenel Fearadaigh in 1166. The Mac Fiachra sept of Cenél Fearadhaigh were known as MacKeaghery.
MacFetridge was also cited as chief of Cineal Feradaigh (O'Hart Pedigees) in the north of Co. Tyrone where offshoots of the clan remained from earlier days. O'Hart also notes the clans of Maolgeimridh (Mulgemery, or Montgomery) and of Maolpadraig or Kilpatrick, who possessed the two districts of Cineal Fereadaidh (or Faraday), in the east of Tyrone.

An early Cenél Feradaich genealogy:   (Rawlinson)
Máel Íssu m. Máel Brigti m. Duib Indsi m. Máel Pátric m. Doiligén m. Brolcháin m. Eilgíne m. Díchon m. Flaind m. Máel Tuile m. Crundmáel m. Suibne m. Fiachnai m. Feradaich m. Éogain m. Néill Noígiallaig.

The annals cite:


Cenel Tigernaich, of the Cenél Éoghain. Tigernach, son of Muiredach and grandson of Eoghan was the progenitor of this clan, although the Book of Ballymote cites a Cenél Tigearnaigh as the race of Tigearnach, son of Eoghan, son of Niall. O'Mulfoharty, and O'Heodhasa (O'Hosey), were styled chiefs of Cineal Tighearnaigh in co. Tyrone according to O'Hart (Pedigrees). O'Hart's source was O'Dugan (Poems) who cites O'Maoilfothartaigh, over Cinel Tighearnaigh; and O hEodhosa, and O hOgain.

An early Cenel Tigernaich genealogy:   (Rawlinson)
Áed mc Muiredaich m. Donngusa m. Duib Uinsenn m. Ainbítha m. Máel Éoain m. Fogartaich m. Máel Roit m. Fir Móir m. Muirgiusa m. Cobthaich m. Tnúthgaile m. Dáire m. Sáráin m. Tigernaich m. Muiredaich m. Éogain m. Néill Noígiallaig.


Cenel Mic Earca, of the Cenél Éoghain. A grandson of Eoghan was Muircherdaich, sovereign of Ireland from about 504 to 527, who was also called mac Earca (after his mother). The Cenel Mic Earca produced a line of kings who were styled sovereigns of Ireland. Máel Fithrich, the son of Aedh Uairidhnach was styled as chief of Cenel mac Earca, and some (Hogan) have placed them in the vicinity of the barony of Clogher, co. Tyrone, as a result of Máel Fithrich's death at the hands of the Cinel Fearadhaigh.
Note: Another Cenel Mic Earca has been placed, in the Book of Ballymote and elsewhere, in connection with Tír Ceara in Ui Fiachrach, co. Mayo.

An early Cenel Mic Earca genealogy:
Máel Fithrich m. Áeda Uaridnaich m. Domnaill m. Muircherdaich m. Muiredaich m. Éogain m. Néill.

The annals cite:


Fir Maige Itha - the men of Magh Ithe, a plain located in the baronies of Raphoe in modern county Donegal, which belonged early to the Cenel Eoghain. Various septs are mentioned in the area, according to the Annals, and in the 12th century this included Ua Gailmredhaigh of Cenél Moain and O'Cairellan of Clann Diarmada (both of Cenél Éoghain). The Ua Gailmredhaigh were expelled from Donegal, by the Cenél Conaill, in the 13th century, and afterwards settled on the opposite side of Lough Foyle, between Strabane and Derry.

Note: Not to be confused with Magh Itha in Leinster, where the Book of Lecan notes Fir Maigi Itha have 7 Aicme [tribes], viz., Ui Deaga, Ui Setna, Ui Dimai, Ui Eircc, Ui Chormaic, Ui Niath and Ui Duirrtheacht.

The annals cite for the term Magh Itha:


Clan Conchobhair, of the Cenél Éoghain, said to be originally of Magh Ithe and certain septs moving into county Derry about the 10th-11th century. Conchobhar was the son of Fergal, and the great-great grandson of Aedh Uairidhnach, whose descendants included O'Cathain (O'Kane and O'Cane), O'Mullan, MacCloskey and the Clan Diarmatta. The O'Kanes were lords of Creeve (Coleraine area) and Keenaght beginning about the 12th century when they overshadowed the O'Connors of Glengiven (modern Dungiven), and Fir na Craoibhe.

An early Clan Conchobuir [Fer Maige Ítha] genealogy:   (Rawlinson)
Máel Ruanaid m. Áeda m. Ruaidrí m. Óengusa m. Cairelláin m. Baígill m. Diarmata m. Conchobuir m. Fergaile m. Máele Dúin m. Máel Fithrich m. Áeda Uaridnaich m. Domnaill m. Muircherdaich m. Muiredaich m. Éogain m. Néill Noígiallaig.

The annals cite for the O'Kanes:


Ciannachta of Glenn Geimin, of Clann Cian, the O Conchubhair Ciannachta occupied the area of Glinne Gemin (Glengiven, barony of Keenaght, County Derry) with authority from about the 5th century, and were succeeded by the O'Cathains in the 12th century. For more information on the lineage of the Ciannachta, also see Ciannachta Breagh.

An early Ciannachta Glinni Gaimen genealogy:   (Rawlinson)
Conchobor m. Donnchada m. Galaich m. Diarmata m. Conchobuir m. Duind Chuain m. Condálaich m. Máel Fathardaig m. Conchobuir m. Taidg Temin m. Cind Fáelad m. Suibne m. Faílbe m. Ernáine m. Crachíne m. Cormaic m. Eircc m. Etchon m. Findcháin (is é cétnandgab Glenn Gaimen) m. Féicc m. Imchada m. Condlai m. Taidgg m. Céin m. Ailella Auluimb.

The annals cite for the Ciannachta of Glenn Geimin:


Clan Diarmatta (Clandermot), of the Cenél Éoghain, descent from Clan Conchobhair. The parish of Clondermot in County Derry is said to derive its name from this clan territory. An O'Carolan sept (O Cairealláin) as well as a Mac Ettigan (Mac Eitigen) were cited as chiefs of Clan Diarmada prior to the 13th century.
Note: not to be confused with Uí Diarmata of Síl Muiredaig, in Connacht.

An early Clan Diarmatta (Clan Conchobuir) genealogy:   (Rawlinson)
Máel Ruanaid m. Áeda m. Ruaidrí m. Óengusa m. Cairelláin m. Baígill m. Diarmata m. Conchobuir m. Fergaile m. Máele Dúin m. Máel Fithrich m. Áeda Uaridnaich m. Domnaill m. Muircherdaich m. Muiredaich m. Éogain m. Néill Noígiallaig.

The annals cite:


Cenél Aenghusa, of the Cenél Éoghain. I find little no reference to this group other than a citation in the Annals, and a similar reference in the Book of Lecan.
Note: Cenél Aenghusa or Oenghusa was also a tribe name for the Mac Cana (MacCanns) who were lords of Clanbrassil in co. Armagh; and also the Cenél Aenghusa who were kings of Leth Cathail in county Down; and the name was also applied to the Ui Allmhuráin (O'Halloran) of co. Galway; and the Magennies of co. Down; and for one of the strong tribes of Dál Riada in Scotland; and for others as well.

The annals cite for Cenel Aenghusa:



Cenél Conaill
Conall Gulban was the son of Niall who established his kingdom, among other places, in Mag Ithe in the valley of the Finn. His territory was co-extensive, more or less with the present baronies of Tir Hugh, Bannagh, Boylagh and Kilmacrenan. Conall's sons included Óengus Gunnat, Nath Í, Tigernach Duí, Énna Bóguine, Fergus Cennfota (or Taulán), and Eochu. Some of the clans or territories of the Cenél Conaill included those of Sil Lugdach (O'Donnell, O'Boyle, O'Doherty, ...) Cenel Bóguine, Tir Ainmireach & Tir Aedha (O'Cannon, O'Muldorey, O'Gallaghers, ...), and Cenel Duach, among others.

An early Cenél Conaill (O'Muldorey) genealogy:   (Rawlinson)
Máel Ruanaid m. Muirchertaich m. Óengusa m. Máel Bresail m. Máel Doraid m. Óengusa m. h-Irchada m. Máel Bresail m. Flaithbertaich m. Loingsich m. Óengusa m. Domnaill m. Áeda m. Ainmerech m. Sétnai m. Fergusa Ceannfhoda m. Conaill Gulban m. Néill Noígiallaig.

The annals cite for Cenél Conaill:

For further Cenél Conaill reference, also see northern Uí Neill kings



Cenél Aedha, of Cenél Conaill, a sept descended from Conall Gulban who are said to have given their name to the barony of Tirhugh, alias Tír Aedha, in county Donegal. In Irish tradition, the naming of Tír Aedha is also cited from Aodh Ruadh, aka Tír n-Aeda Ruaid mic Badhuirnn (mic Airgedmair), a legendary monarch of Ireland and father of Macha, founder of Emain. From the same name comes Eas Ruaidh (Assaroe, now Ballyshannon), an early name for this region of Donegal.

Early prominent septs in the area of Tirhugh included Ó Maeldoraidh, Ó Canannáin (O'Cannon) and Ó Gallchobhair (O'Gallagher). The former two were in early contention for the kingship of Cenél Conaill, as noted in the Annals. By the 13th century the O'Donnells rose to dominance among the septs of Cenél Conaill, the O'Gallaghers becoming the leaders of the O'Donnell calvary.

An early Muinntiri Gallcubhair (O'Gallagher) genealogy:   (O'Clery)
Gallchobar m. Ruarcain m. Ruaidri m. Donnchadha m. Domhnaill m. Ceallaigh m. Maoil cobha m. Aedha m. Ainmirech m. Setna m. Ferghusa cennfhoda m Conaill gulban m. Neill noighiallaigh.

The annals cite:


Sil Lugdach, of the Cenél Conaill and Clann Dálaigh. Lugaid was the son of Setna, and great-grandson of Conall Gulban, whose descendants included the sept of O'Domhnaill (O'Donnell), Kings of Tir Conaill from the 13th to the 17th centuries ("Flight of the Earls"). Sil Lugdach, or Cenél Luighdech, is described as a chief sept seated in the barony of Kilmacrenan, county Donegal (Book of Fenagh), their tribal territory extended from Dobhar (Gweedore) to the river Suilidhe (Swilly) (Leabhar na gCeart). The O'Donnells, at first lived along the river Lennon but later established themselves in south Donegal. They rose to power as kings of Cenél Conaill in the early 13th century.
The Uí Baoighill (O'Boyles) and the Uí Dochartaig (O'Dohertys) were also of Sil Lugdach.

An early Sil Lugdach genealogy"   (Rawlinson)
Cathbarr m. Gillai Críst m. Cathbairr m. Domnaill m. Éicnich m. Dálaich m. Muirchertaich m. Cind Fáelad m. Airnelaich m. Máel Dúin m. Cind Fáelad m. Gairb m. Rónáin m. Lugdach m. Sétnai mic Fergus m. Conaill Gulban m. Néill Noígiallaig.

The annals cite:


Arda Midhair, The Ó Dochartaigh (O'Dohertys), of Cenél Conaill, were cited as chiefs of Arda Midhair (Ardmire, perhaps the Finn Valley) in the barony of Raphoe, county Donegal. At the turn of the 13th century two Ó Dochartaigh were noted as kings of Tír Chonaill, breaking a long hold the O'Cannons and O'Muldorys (Mulderrys) had on this title. Soon after the O'Donnells rose to prominence in Tír Chonaill. By 1247 the O'Donnells are noted as Lords of Inishowen for the first time (Annals), an apparent indication of Cenel Conaill expansion into a region traditionally held region by the Cenel Eoghain (Mac Lochlainn). The arrival of the Norman de Burgo family by the latter half of the 13th century saw the building of fortifications in the region. Any fear of further Anglo-Norman expansion in Inishowen and Derry, however, was halted by the murder of Earl William de Burgh in 1333, and the absenteeism of his heirs kept the path open for Gaelic dominance in the region. It was perhaps during this time the Ó Dochartaigh began to make inroads into Inishowen, as chieftains under O'Donnell. By the early 15th century the Ó Dochartaighs are noted as lords of Inishowen (Annals), and the peninsula later became known as "O'Dogherty's Country".

An early Ua Dochartaigh genealogy:   (O'Clery)
Diarmada m Conchobhair m Domhnaill finn m Donnchadha duinn m Domhnaill droma fornochta m Maenghuile m Donnchadha m Moenghuile m Dochartaigh (o raiter .h. Dochartaigh) m Maenghuile m Fiamhain m Cinnfaeladh m Gairbh m Ronain m Luigdheach m Setna m Ferghusa cennfhoda m Conaill gulban.

The annals cite:


Cenél mBógaine, of the Cenél Conaill, named from Énna Bóguine, son of Conall Gulban. O'Donovan describes Tír Boghaine as the barony of Banagh, and part of the barony of Boylagh, in county Donegal.
St. Crona (Croine Bheag) who was living in the 7th century was the daughter of Diarmuid, son of Garbhan, son of Brandubh, son of Melge, son of Enna Boghuine, son of Conall Gulban, Son of Niall Naoighiallaigh (Niall of the Nine Hostages).

An early Cenel Bóguine genealogy:   (Rawlinson)
Murchad m. Máel Ograi m. Echdach m. Forbassaich m. Sechnassaich m. Dúngalaich m. Máel Tuili m. Sechnassaich m. Garbáin m. Branduib m. Meilge m. Énnae Bóguine m. Conaill Gulban m. Néill Noígiallaig.

The annals cite:


Cenel Duach, of the Cenél Conaill, named from Tigernach Duí (Duach), son of Conall Gulban. Nainnid son of Daui is mentioned in Chronicon Scotorum 563 at the battle of Móin Daire Lothair which was won over the Cruithin by the Uí Néill of the North. Chronicon Scotorum, in the year 586, notes the killing of Baetán son of Ninnid son of Daui son of Conall Gulban, king of Temair. The Annals of Tigernach cite Baedan, son of Níndedha, grandson of Conall Gulban, as a king of Tara in AD 586, i.e. Baedan mac Níndedha, maic Conaill Gulban, rí Temrach. In the Annals of Ulster, for 586, his obituary appears as "the killing of Baetán son of Ninnid son of Daui alias son of Fergus Cennfhata son of Conall of Gulbu, king of Temair, who reigned one year."

A Cenel Duach genealogy:   (Rawlinson)
Nuadu m. Duinechda m. Cuircc m. Duach m. Sechnassaich m. Conaill m. Báetáin m. Ninnida m. Duach m. Conaill Gulban m. Néill Noígiallaig.



Tir Ainmireach, a name applied to an area of Ua Bhaeighill (O'Boyle) chieftainship in southern county Donegal. O'Hart (Pedigrees) calls the O'Boyles chiefs of Clan Chindfaoladh of Tir Ainmireach, and of Tir Boghaine. Originally their territory extended from Donegal town to near Kilmacreannan along the west coast. The O'Boyles are said to have given their name to the barony of Boylagh in county Donegal. With the rise of the O'Donnells in the 13th century, their territory became divided, with Tir Ainmireach (around Ardara) in the south, and the Three Tuatha (around Falcarragh and Kilmacrennan) toward the north. The MacSweeneys were brought into this area as Gallowglass to O'Donnell in the 14th century.

An early Ua Bhaeighill genealogy:   (O'Clery)
Toirrdelbach ruadh m Taidh oicc m Taidhg m Toirrdelbaigh m Neill m Toirrdelbaigh oicc m Toirrdelbaigh moir m Nell ruaidh m Menman m Aedha m Aindilis m Menman m Conchobair m Cellaigh m Giolla brighde m Aindilis m Garbann m Baighill m Bradagain m Muirchertaigh m Cindfhaeladh

The annals cite:


Rosguill, a promontory (or Ross) in the barony of Kilmacrenan, co. Donegal, between Sheep Haven and Mulroy bay, i.e. in the parish of Mevagh. O'Dugan (Poems) cites that Ros-Guill and Ros-Iorguil belong to MacGillatsamhais. Ros-Iorguil, or Irguill, is equated to Horn Head, to the west of Ros Guill, in the index to the Four Masters. Both areas are west of Fanad. Who the MacGillatsamhais' (Mac Giolla Shamhais) were is not known.

In the same section of his Topographical Poem, O'Dugan also mentions belong to O'Cearnachain (e.g. Kernaghan) and Muintir Dalachain over Tuath Bladhach (Bladhaigh). Tuath Bladhaigh, anglicized Tuath Doe, is a well known district situated between Sheep Head and Cloghaneely, placing it to the south of Ros-Iorguil. Cloghineely is noted by O'Donovan in connection with the Ua Baighill (O'Boyles) of Cloch Cinnfhaelaidh, where they held sway until perhaps the second half of the 14th century. Here they are cited as chiefs of na Trí Tuath before the MacSweeneys. The areas of Rosguill (now Downing's & Carrigart), Doe (now Creeslough & Dunfanaghy), Cloughaneely (now Falcarragh ) and Tory Island, were later ruled by the Mac Sweeneys from Doe Castle. These were the MacSweeney Na Doe (Mac Suibhne na d'Tuath), lords of Na Tuatha. The district called Na Trí Tuatha, or Tuatha Toraighe, was an area extending from Ros Guill and Mulroy Bay in the east to Gweedore Bay in the west, with Tory Island included.
Note: Trí Tuatha, not to be confused with the Three Tuatha of county Roscommon.

The annals cite:


Finn Ros, aka The Rosses, in Tirconnell, the land of the O Forananes and O Carnahanes, according to O'Brien's Irish Dictionary. O'Dugan (Poems) places O'Furadhrain over Fionn Ros, and O'Donovan translates the surname as Farran or Forran. O'Donovan in his notes to O'Dugan's Poems cites Fionn-Ros, now the Rosses, was situated in the barony of Boylagh. The Rosses are marked on a modern map of Ireland in the civil parish of Templecrone, in the far north of the barony of Boylagh. The Rosses extends from Crolly Bridge in the north to Gweebarra Bridge in the south, embracing all the intervening coastline and islands, penetrating inland as far as the Derryveagh mountains and the alpinesque village of Doochary.

The territory of Trián Íochtair Baoighellach is described by O'Donovan (Four Masters) in "The Rosses", between Aranmore Island and the Gweedore river, in county Donegal. At least a portion of the Rosses region, if not all, was connected with the O'Boyles, near of a portion of the Tri Tuath area they once held.

The annals cite:


Fánad, or Fanat, is the peninsula between Lough Swilly and Mulroy Bay, in the northeast of the barony of Kilmacrenan, county Donegal. The sept of Ua Bresleáin (O'Breslen or Breslin), a branch of the Cenél Enda (MacLysaght) although cited by others as a branch of Cenel Conaill, are noted as early chiefs of Fanad, later noted as Brehons for Maguire of Fermanagh. The Mac Suibhnes (Mac Sweeney Fanat) are not as chiefs of Fanad in the late 14th century.

The annals cite:



Cenél Enda
Two distinct territories are mentioned. From Eanna (Enda), the sixth son of Conall Gulban, descended the Cinel Eanna, Kings of Magh Ith, Tir Eanna and Fanad in present day Co. Donegal. This territory was in and near the southern tip of Inishowen. (note: The cantred of Enda, son of Niall, is mentioned by the Four Masters in the year 1600).
Hogan (Goedelicum) describes the original apportionment to Enna, son of Niall, in the partition of Tirconnell, circa 400 A.D. to comprise from the boundary of Inis Eoghain to Bearnas mor (Gap of Barnesmore, near Donegal) and Sruthail (Sruell, Killyward parish, barony of Banagh, c. Don.)
According to O'Dugan (Poems), the following were chiefs of Magh Ith: O'Baoighill, O'Maiolbreasail, O'Cuinn, and O'Cionaith. Mag Ith was partly in the barony of Raphoe in Donegal, and partly in the barony of Tirkeran in Derry. O'Breslin, cited as chiefs in Fanad and noted as brehons there, are cited by MacLysaght as a branch of Cenel Enda, and by others as a branch of Cenel Conaill (descent from Fergus Fanad).

Another Cenél Endai was cited in southern Co. Donegal and possibly northwestern Co. Fermanagh. As the story goes, Enda, the youngest son of Niall of the Nine Hostages, received territory about the 5th century which extended from the river Errity to Barnesmore, barony of Tir Hugh, to Sruell in the barony of Banagh, county of Donegal. The north-western limit was Farnagh in the parish of Aughnis, barony of Kilmacrenan. The eastern limit of his lands was the river Finn.

To confuse matters, there does not appear to be evidence of a dynastic family descended from Énda existing in the North before the 11th century. All earlier references in the Irish texts seem to associate the Cenél Énda with the Cenél Fiachach and the Lóegaire in Mide and also in Connacht. For example, Ua Braonain (O'Brennan) of Creeve and Mac Ruairc (Mag Rourke, Groarke) of Teallach-Conmasa, both located in county Westmeath, claim descent from a Cenél nÉnna.

11th century chiefs of Cenél n-Enda mentioned in the annals below include ua Lapáin (O'Lappin) and ua h-Eicnechan (roughly O'Heneghan). Chiefs from Cenél Moen and Cenél Conaill are later noted in the area of Tir Enda in co. Donegal.

The annals cite:



Cenél Cairpri [Mor]
"Críoch Cairpre Droma Cliab" of northern Co. Sligo and northeast Co. Leitrim. The territory of Cairbre, son of Niall of the Nine Hostages, around the 6th century extended from the Drowes west to the Owenmore river in Ballysadare. Duncarbry (Dun Chairbre, or Cairbre's Fort) - later a McClancy fort - marks the border of Cairbre's territory on the Drowes, while the Barony of Carbury in North Sligo today reminds us also of where he ruled. Noted chiefs of Cenél Cairpre included O'Mulclohy (Ó Maolchloiche), a name which was later mistranslated to Stone. Cairbre's descendants are said to have also settled in Grandard in the county of Longford.

Other Cairpre septs - Uí Cairpri Laigen (Ua Ciardha of Carbury, Co. Kildare); and Cairpre Gabra, near Grandard, co. Longford.

An early Cairpri Mor genealogy:   (Rawlinson)
h-Uallgarg m. Máel Ruanaid m. Máel Fábaill m. Ciardai m. Máel Bennachtai m. Écneicháin m. Dúnchada m. Arttgaile m. Donngaile m. Loingsich m. Lóegaire m. Con Gamna m. Moínaich m. Fiangusa m. Congaile m. Máel Dúin m. Scandláin m. Roitich m. Ainmerech m. Cormaicc m. Cairpri m. Néill Noígiallaig.

The annals cite (possibly related to this Cairpri sept):
The annals cite for the general terms Cairpre, Coirpri, et al:


Other Notes from O'Dugan, O'Hart, O'Donovan, etc.


Further Ulster Reference: N. Ui Neill Kings * Uladh * Airghialla * Uladh Kings * Uladh Annals

Further Province Reference: Index * Connacht * Leinster * Mide * Munster * Ulster


Further Reference at this site:
Ireland History in Maps - Home Page
Old Irish Surnames
Kingdoms and Clans


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