Clancy

Name: given name and surname

Clancy is an Irish name coming from the Gaelic Mac Fhlannchaidh/Mac Fhlannchadha, meaning "Son of the red/ruddy warrior" (Mac being for sons, Ní Fhlannchaidh/Ní Fhlannchadha would be for daughters), or as a hypocorism for Clarence. The surname originated from two different families, one in Thomond and one in the present day County Leitrim.