are used on the island of Ireland as well as elsewhere in the Western World as a result of the Irish diaspora. See also about Irish names
Possibly means "strength" in Irish Gaelic. It is also sometimes used as an Irish form of THERESA
Means "of Ulster" in Gaelic. Ulster is a region in the north of Ireland. This name was borne by two 7th-century Irish saints.
Possibly derived from Irish uan