Goll mac Morna (or Goal mac Morn) was a member of the fianna and an uneasy ally of Fionn mac Cumhail in the Fenian Cycle of Irish mythology. In early Ireland, fianna (singular fian) were small semi-independent warrior bands who lived apart from society in the forests as Fionn mac Cumhaill (ˈɸʲiːn̪ˠ mˠak ˈkũw̃aːlʲ in Irish, ˈfɪn mə ˈkuːl in English) (earlier Finn or Find mac Cumail or mac The Fenian Cycle or Fiannaidheacht (modern Irish Fiannaíocht) also known as the Fionn Cycle, Finn Cycle, Fianna Cycle, Finnian The Mythology of pre-Christian Ireland did not entirely survive the conversion to Christianity, but much of it was preserved shorn of its religious meanings He had killed Fionn's father, Cumhal, and taken over the leadership of the fianna, but when Fionn grew up and proved his worth Goll willingly stepped aside in his favour. In Irish mythology, Cumhall (earlier Cumall, pronounced roughly "Coo-al" or "Cool" son of Trénmór ("strong-great" was a leader of
His given name was Áed. He gained the name Goll ("one-eyed") when he lost an eye in his battle with Cumhal.