FTP, name this giant warrior and member of the Fianna, who was eventually slain by Finn MacCool.
He once saved the day on a doomed hunting trip to Keshcorran by killing two witches that had captured his allies and forcing the third one, Irnan, to free them.  After his death, his prized possession was buried at Slieve Baune, and his grandson Fer Li would later die in a failed attempt to avenge him.  The aforementioned possession was named Solustairtech, and was a giant chessboard fashioned out of gold and silver.  It was at the battle of Cnucha where he had his eye put out with a spear and lost his birth name, Aed, and this event also brought about the duel in which was he was killed by his ally and rival in retaliation for killing that ally's father, Cumhail.  FTP, name this giant warrior and member of the Fianna, who was eventually slain by Finn MacCool.
He once saved the day on a doomed hunting trip to Keshcorran by killing two witches that had captured his allies and forcing the third one, Irnan, to free them.  
Goll mac Morna (accept Aed mac Morna before it is mentioned)