Gilroy

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. The surname Gilroy was first found in County Clare (Irish: An Clár) located on the west coast of Ireland in the province of Munster, where they were the Chiefs of Clonderlaw, conjecturally descended from Tiobraid, son of Iral Glunmhar, King of Ulster.