Kiernan Family CrestThe Irish surname Kiernan is an anglicized form of the Gaelic name Mac Thighearnáin meaning “son of Tighearnan.” The name is popular in the northern province of Ulster, particularly in counties Cavan and Donegal. The name is first recorded in the New Wold in 1802 when Hugh Kiernan arrived in Philadelphia. Today there are approximately 6,000 bearers of the name Kiernan living in the US. 




 Kiernan family crest ring


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