Hogan is a surname. If derived from the Gaelic, it is diminuative of "Og" meaning "Young", but if it is derived from Cornish, it means mortal. This youthful definition of the name is also reflected in the Welsh, where Hogyn means stripling. It has been claimed that those who bear the name are descended of an uncle of Brian Boru, the Irish High King. The name, in Northern Ireland, has been further Anglicized to the form "Hagan".
