• Nial Noigiallach (of the Nine Hostages) - High King (d 405 AD)
• Eoghan (Owen)
  MacDermott, O'Connor, O'Kelly, etc.
• Muireadhach
  MacCawell, O'Brollaghan, O'Crodden, O'Cunigan, O'Gormley, O'Hosey, Tierney, etc.
• Muircheartach
  Dillon
• Domhnall Illchealgach
• Aodh Uairiodhnach
• Maoilfithrigh
  Flood, Multally, Tully, etc.
• Maolduin
  Adam, O'Daly
• Fearghal
  MacAneney, O'Braoin, O'Cathain, O'Kane, Culkin
• Niall Frasach
• Aodh Oirndidhe
  Kenny, Muldoon
• Niall Caille
  O'Brien, O'Dubhionracht, O'Hualairg
• Aodh Fionnliath
  Clann Domhnall, O'Donnelly
• Niall Glundubh
• Muircheartach
  Clann Aodha Buidhe
• Domnall
  MacLochlainn, O'Neil

The Irish Chiefs and Clans of Tirowen as given by O'Dugan

• O'Neill and MacLoghlin , as princes.
• O'Cahan , of the race of Owen, and who was chief of Cianacht of Glean Geibhin (or Keenaght of Glengiven). The O'Cahans were also chiefs of the Creeve, now the barony of Coleraine; and in later times, possessed the greater part of the county of Derry, which was called O'Cahan's Country ; they also, at an early period, possessed part of Antrim, and had their seat at the castle of Dunseverick.
• The O'Connors , who were chiefs of Cianacta before the O'Cahans.
• O'Duibhdiorma (O'Dwyorma) , sometimes anglicised O'Dermot or O'Dermody. The O'Dwyorma were chiefs of Breadach which comprised the parishes of Upper and Lower Moville, in the barony of Inishowen.
• O'Gormley or Grimley, chief of Cineal Moain, now the barony of Raphoe, county Donegal.
• Magh Ith and Cineal Enda , partly in the barony of Raphoe, and partly in the barony of Tirkeran in Derry. According to O'Dugan, the following were chiefs of Magh Ith: O'Boyle, O'Mulbraisil, O'Quinn, and O'Kenny .
• O'Broder, O'Mulhall and O'Hogan , chiefs of Carric Brachaigh, still traceable by the name Carrickbrack , in the barony of Inishowen.
• O'Hagan , chief of Tullaghoge in the parish of Desertcreight, barony of Dungannon, and county Tyrone.
• O'Donegan (Dongan), MacMurchadh (MacMorough), O'Farrell (Freel), and MacRory (MacRogers) , chiefs of Tealach Ainbith and of Muintir Birn, districts in the baronies of Dungannon and Strabane.
• O'Kelly , chief of Cineal Eachaidh or Corca Eachaidh, probably Corcaghee , in the barony of Dungannon.
• O'Tierney and O'Kieran , chiefs of Fearnmuigh.
• O'Duvany, Oh-Aghmaill (O'Hamil) and O'Heitigen (Magettigan) , chiefs of three districts called Teallach Cathalain, Teallach Duibhbrailbe, and Tealach Braenain.
• O'Mulfoharty and O'Heodhasa (O'Hosey) , chiefs of Cineal Tighearnaigh.
• O'Cooney and O'Bailey , chiefs of Clann Fergus.
• O'Murchada, O'Murphy and O'Mellon , chiefs of Siol Aodha - Eanaigh.
• MacPetridge and MacCathmhaoil , chief of Cineal Feradaigh, in the north of Tyrone.
• The Clans of Maolgeimrigh , and of Maolpadraig or Kilpatrick, who possessed the two districts of Cineal Fereadaidh, in the east of Tyrone.
• Muintir Taithligh of Ui-Laoghaire of Lough Lir, a name anglicised MacTully or Tully.
• O'Hanter (Hunter) , chiefs of Ui-Seasin.

Other chiefs not listed by O'Dugan (added by O'Hart)

• O'Criochain (O'Crehan) , chief of Ui Fiachra, a territory which comprised the parish of Ardstraw, and some adjoining districts in Tyrone.
• O'Quinn , chief of Magh Lughad and of Siol Cathusaigh. Magh Lughad lay in Keenaught of Glengiven, County Derry.
• O'Cearbhallins , chiefs of Clandermod or Glendermod, in Derry.
• O'Brolachans , a branch of the Cinel Eoghainn.
• MacBlosgaidh (MacClosky) , a branch of the O'Cahans, a numerous clan in the parish of Dungiven.
• O'Devlins , chiefs of Muintir Dubhlin, near Lough Neagh, on the borders of Derry and Tyrone.
• O'Looneys , chief of Muintir Loney, a district known as the Monter Loney Mountains in Tyrone.
• O'Connellan , chief of Crioch Tullach in Tyrone.
• O'Donnelly , chiefs in Tyrone, at Ballydonnelly and other parts.
• O'Nena (O'Neny, MacNeny) , were chiefs of Cinel Naena, in Tyrone, bordering Monaghan.
• O'Flaherty , lord of Cinel Eoghainn.
• O'Murray , a clan in Derry
• MacShane , a clan in Tyrone.
• O'Mulligan , also a clan in Tyrone.
• O'Gnive (O'Gneeve) , hereditary bards to the O'Neills.