Mac Conduibh
Mac CONDUIBH—IV—MacAnuff, MacAniff, MacEniff, MacKniff, MacNuff, MacNeffe, MacNiff, MacKiniff, MacEndoo, MacIndoo, MacAdoo, MacAdo, MacCaddoo, MacCaddo, Conniff, Conniffe, Conneffe, Cunniffe, Quinniff, Caddow, &c.; 'son of Cú-dubh' (the black hound); a Connacht surname.
Alphabetical Index to Irish Surnames