Tierney

Anglicized form of TIGHEARNACH. In part, it is from a surname derived from the given name.

TIGHEARNACH   male   Irish
Derived from Irish Gaelic tigern meaning "lord". This was the name of an Irish saint of the 6th century. In his youth he was kidnapped by Welsh pirates and brought to Wales, but he escaped to Scotland. Eventually he returned to Ireland where he was a bishop of Clogher.
EQUIVALENTS
ENGLISH: Tierney
IRISH: Tiarnach, Tierney, Tigernach, Tighearnach
OTHER FORMS
IRISH: Tiarnach, Tigernach, Tighearnach