Hero of the Ulster Cycle of Irish mythology…

Hero of the Ulster Cycle of Irish mythology, son of the god Lugh, and central figure of the epic Táin Bó Cúailnge. Born Sétanta, he gained his famous name after killing the guard dog of the smith Culann and offering to replace it. As a youth he single-handedly defended Ulster against the armies of Queen Medb of Connacht. Mortally wounded, he tied himself to a standing stone to die upright.

The answer in 10 letters