O'Tierney – Ó Tighearnaigh
O'Tierney Ó Tighearnaigh derived from the Gaelic word tighearnach meaning “lord” or “lordly”. Tighearnach, sometimes spelt Tigernaich or Tigernach or even Tignarach was a popular given name in ancient Ireland. The O'Tierney Clans Society was formed in 1990 to represent the following main septs of the name:
O'Tierney Chiefs of Farney (Armagh)
O'Tierney Chiefs and Lords of Ceara (Mayo)
O'Tierney Kings of Bréaga
Fearran O'Tierney (Tipperary)
O'Tierney of Corcu Modruad (Clare)
Website: http://tierneyclans.weebly.com/
Email: anotighearnaigh@gmail.com
Contact: Mr. Cathaoir Ó Tighearnaigh, Naomh Antoine, 53 Árd Aoibhinn, Athenry, County Galway, Ireland.
DNA Project in progress.