Ferghus Scannal mac Crimthainn ("Fergus of the Disputes, son of Crimthann"; died AD 582) (although the Annals of the Four Masters note the death occurred...

successor to his father Coirpre Cromm mac Crimthainn (died 577). However, the other references mention Feidlimid mac Tigernaig as king. According to the...

(extinct) Ferghus Scannal, d. 582 Eóganacht Ninussa Éoganacht Ua Cathbach Eóganachta dynastic surnames include O'Callaghan, MacCarthy, O'Donoghue, MacGillycuddy...