Egan is a surname that comes from the Irish Gaelic name Mac Aodhagáin.
It is derived from the root 'aedh' meaning little fire and the diminutive 'an' hence 'the little bright-eyed one'.
Variations include: Egan, Eagan, Keegan, McKeegan, MacEgan, Kegan, Keagan and Egen.
The name originates from County Tipperary (north).