Tierney


Tierney is an Irish surname and forename.
It is an Anglicized form of Irish Ó Tiarnaigh, Ní Thiarnaigh, also spelled Ó Tighearnaigh/Ní Thighearnaigh. It is derived from tiarna, the Irish word for lord or master.
Five unrelated families of the name arose in Gaelic Ireland, in what is now County Clare, County Mayo, County Monaghan, County Meath, and County Tipperary.

Families

Ó Tighearnaigh of Cenél nEógain

This family were lived in the territory of Fearnmuigh or Fearnmaigh , in an area in South Monaghan/South Armagh that is the present Barony of Farney, whose principal town is Carrickmacross.

Ó Tighearnaigh of Uí Fiachrach Muaidhe

This family were Lords of Carra. Almost the only family member recorded in the annals was Flann Ó Tighearnaigh. Gilbert Ó Tigernaig, Bishop of Annaghdown was also a member of this family.

Ó Tighearnaigh of Brega

This family claimed descent from Tigernach mac Fócartai, one of the Kings of Brega. They were a branch of the southern Uí Néill. "The Kingdom is said to have stretched from Birr in Co. Offaly to the Hill of Uishneach in Westmeath. Tighearnach resided at the Great Crannóg of Lagore, which is situated near Ratoath in County Meath, not far from Dublin. Tighearnach led the Irish to a great victory over the Norse in 848 A.D."

Ó Tighearnaigh of Ormond

A family of the name resided in Ormond, now County Tipperary. Their origins are obscure. New research now confirms that this family was indeed an indigenous sept. Their seat was in the townland of Park and their lands, Fearann Ó Tighearnaigh, took in most of the present-day townlands of Ballymackey, Ballyknockane, Carrowea, Clash, Falleen, Gortnadrumman, Kilgorteen and Knockane.

Ó Tighearnaigh of Corcu Modruad

This is an area in northern Clare. This sect were hereditary priests and monks.

People

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