What is "mcmenamin"

McMenamin is an Irish surname. In ancient Gaelic it was shorter, Meanma, a word meaning courageous or high spirited. It originated in Co. Donegal in the 13th Century and the Meanma’s were a warrior branch of the O'Donnells of Tirconnell (Donegal), who were the "chieftains of Fanad" a large territory in Donegal.