McKenna is an Irish surname. It derives from the Gaelic name Cináed (Anglicized as Kenneth), meaning "born of fire". It is the Anglicized form of the Gaelic Mac Cionaodha meaning "son of Cionnaith", or of the Scottish surname, from Galloway, "MacCionaodha". The historical lineage of the McKennas lies in the Barony of Truagh in the north of County Monaghan in the south of Ulster in Ireland, where they were "The Lords of Truagh". In Munster Irish, McKenna is considered to come from Mag Cineáit. Th…