Eark family genealogy
CAIRBRE, a brother of Daire who is No. 91 on the "O'Connell" pedigree, was the ancestor of O'Eirc; anglicised Eark and Ercke.
91. Cairbre: son of Brian.
92. Earc ("earc": Irish, speckled): his son; a quo O'Eirc.
93. Oilioll Ceannfoda: his son.
94. Macearc: his son.
95. Greillean: his son.
96. Conall (or Amhalgadl): his son.
97. Cuan: his son.
98. Maoltuile: his son.
99. Muirt: his son.
100. Tuathal: his son.