From Irish Pedigrees; or the Origin and Stem of the Irish Nation by John O'Hart
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Arms: Ar. on a mount in base, an oak tree all ppr. *
THIS family was driven out of their territory of Glean-Geimhin and Cianachta (now the barony of "Keenaght," co. Derry), by the O'Cahans, before the English invasion.
Fionnchan, a brother of Conla who is No. 87 on the "O'Carroll Ely" pedigree, was the ancestor of O'Conchobhair, Cianachta; anglicised O'Connor, of Keenaght, in the county Derry.
87. Fionnchann: son of Tadhg.
88. Fec: his son.
89. Fionnchann: his son.
90. Eathchin: his son.
91. Erc: his son.
92. Cormac: his son.
93. Cnidhceann: his son.
94. Suibhne: his son.
95. Ceannfaola: his son.
96. Tadhg: his son.
97. Tomaltach: his son.
98. Conchobhar ("conchobhar:" Irish, the helping warrior): his son; a quo O'Conchobhair.
99. Ruadhri: his son.
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NOTE
* O'Connor: There were several "O'Connor" families in Ireland.
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