What is "mcgowan"

McGowan is a surname. It is an Anglicization of the Irish and Scottish surname Mac Gobhann. Belonging to the Uí Echach Cobo, located in modern-day County Down, Northern Ireland, they produced several over-kings of Ulaid. By the late 12th century, the English had expelled the McGowan's to Tír Chonaill in modern-day County Donegal, Republic of Ireland.