For ten points, name this wielder of the spear Gae Bolg, a hero who appears in Ireland's Ulster Cycle.
This man killed his only son Connla because he refused to identify himself, even though he had told Aife to instruct their son to never reveal his name. This husband of Emer had a charioteer named Laeg, who is killed by the first of Lugaid's spears. This man trained with the warrior-woman Scathatch, after which he received a (*) spear with 49 barbs, which he used to fight Queen Mebd's armies in the Cattle Raid of Cooley. As a youth, he killed a fierce guard dog and earned a new name after agreeing to replace it while a new one could be found. For ten points, name this wielder of the spear Gae Bolg, a hero who appears in Ireland's Ulster Cycle.
This man killed his only son Connla because he refused to identify himself, even though he had told Aife to instruct their son to never reveal his name.
Cu Chulainn [or Hound of Culann or equivalents; accept Setanta]