Duffeny family genealogy
Of Tirconnell
Arms: Ar. a sinister hand couped at the wrist affrontée gu.
BLATHMAC, brother of Niall Caille who is No. 98 on the (No. 1) "O'Neill" (of Tyrone) pedigree, was the ancestor of O'Duibheanaigh; anglicised Duffeny, Deveny, and Devany.
98. Blathmac: fourth son of Aodh Ornaighe, the 164th Monarch of Ireland.
99. Cuirc: his son.
100. Dubheanach ("dubh:" Irish, black; "eanach," a moor): his son; a quo O'Duibheanaigh.
101. Gairbiadh: his son.
102. Fearmorcach: his son.
103. Giolla Conghal: his son.
104. Aongus: his son.
105. Muirceartach: his son.