Mac Cogaráin
Mac COGARÁIN—IV—M'Cogerane, Coghran, Cochrane, Caughran; 'son of Cogarán'; the name of an old Thomond family, descendants, no doubt, of Cogarán, 'the confidential servant' of Brian Boru. Also Ó Cogaráin, which see.
Alphabetical Index to Irish Surnames