1. The god Lugh was associated with truth, the law, and the arts. He carried a fiery spear and a sword named Fragarach, and had a hound called Failinis which could change water into wine. He was also the father of which legendary Irish hero?
From Quiz The Tuatha Dé Danann: Deities of Ireland
Answer:
Cu Chulainn
Cú Chulainn, aka Sétanta, was the son of Lugh and a mortal woman, Deichtine. In one version of the myth, she was King Conchobar's charioteer, and she and a group of Ulstermen sought shelter in a house while hunting. Lugh appeared to her and revealed that he was the owner of the house, and that she was pregnant with his child. Unfortunately, she was also in a relationship with Súaltam Mac Róich at the time, and she aborted the child. She then conceived a baby and called him Sétanta.
In another version, Deichtine was Lugh's pregnant wife and lived in the house where the Ulstermen stayed, but he abandoned her and the baby, and she married Súaltam and gave birth to Sétanta. Cú Chulainn means 'hound of Culann', and Sétanta was given the name after he killed the smith Culann's dog and offered to replace it as a watchdog. Like Lugh, he grew up to be skilled with a spear. (Incidentally, fans of both Irish mythology and the mobile phone game 'Fate/Grand Order' may have noticed that all the answers are characters in the game.)