The Irish name Gilroy is derived from the native Gaelic Mac Giolla Rua Sept that was located in the Nothern County of Fermanagh. There are a number of variants of this name including MacIlroy and MacElroy in Ulster Province and Kilroy in Connaught Province.

Origen: Irlandés. The name Gilroy has seen many modifications since the time in which it was first devised. In Gaelic it appeared as Mac Giolla Rua, which means son of the red-haired youth. First found in county Clare, where they held a family seat from ancient times, and were directly descended from Irial, the ancient King of Ulster.

Variantes: Gilroy, Kilroy, MacGilroy, MacElroy, MacGreevy, Greevy, MacGilrea, McGilroy, McElroy, McGreevy, McGilrea, MacIlrea, McIlrea, Magilroy, Magilrea, MacElry, McElry, MacIlree y otros.