Pre-1200 A.D.

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Kings of Carraig Brachaidhe

O Maolfabhail (O'Mullfall, MacFall)
Clann Fhearghusa (& Cenel Coelbad)
Seated at Carrickabraghey (on the Isle of Doagh, parish of Clonmany)

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Kings of An Breadhach

O Duibhiorma (O'Dwyorma, MacDermott)

The Rights of Ó Neill also mention an O Heanna as one of the three chieftains of Inishowen.

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The Rights of Ó Neill

The household of Ó Neill in Inis Eoghain is made free. And three chieftains were left over them: O Heanna, and he was given as estate
from Tarbh Chinn Chasla to Tumog Eich I Eanna (where she died), a horse's run; the estate of O Maolfhabhaill, from Tumog Eich I Eanna
to Allta Gorma entering the Breadach; the estate of O Duibhdhiorma, a horse's run from Allta Gorma to Ard An Chro.

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Kings of Aileach

MacLochlainn (McLaughlin)
Ua Neill (Ó Neill)
Clann Neill (descendants of Neill Glundubh, s. of Aedh Finnlaith)
Clann Domnall (descendants of Domnall, s. Aedh Finnlaith)