Lugh

Lugh or Lug (Old Irish: [luɣ]; Modern Irish: Lú [luː]) is one of the most prominent gods in Irish mythology. A member of the Tuatha Dé Danann, Lugh is portrayed as a warrior, a king, a master craftsman and a savior. He is associated with skill and mastery in multiple disciplines, including the arts. He is also associated with oaths, truth and the law, and therefore with rightful kingship. Lugh is linked with the harvest festival of Lughnasadh, which bears his name. His most common epithets are Lámfada ([ˈlaːwad̪ˠə], "of the long arm," possibly for his skill with a spear or his ability as a ruler) and Samildánach ("equally skilled in many arts").

In mythology, Lugh is the son of Cian and Ethniu (or Ethliu). He is the maternal grandson of the Fomorian tyrant Balor, whom Lugh kills in the Battle of Mag Tuired. His foster-father is the sea god Manannán. Lugh's son is the hero Cú Chulainn, who is believed to be an incarnation of Lugh.

Lugh has several magical possessions. He wields an unstoppable fiery spear, a sling stone, and owns a hound named Failinis. He is said to have invented fidchell (a Gaelic equivalent of chess), ball games, and horse racing.

He corresponds to the pan-Celtic god Lugus, and his Welsh counterpart is Lleu Llaw Gyffes. He has also been equated with Mercury, as well as Apollo.

References:
-https://en.wikipedia.org/wiki/Lugh