For 10 points, identify this father of Cuchulainn, a Celtic hero considered cognate to the Welsh Lleu Llaw Gyffes.
This figure ordered Brian, Iuchar, and Iucharba to seek out a number of weapons, then refused to heal the injuries they incurred, thus avenging his father's death. After slaying Cermait for sleeping with one of his wives, this figure was killed by Cermait's three sons. This figure once claimed to possess all skills at the gate of Tara and later proved his mettle by defeating Oghma in a flagstone-throwing contest. He received the sword Fragarach from his foster father, Mannanan mac Lir. This son of Cian and Ethniu avenged the death of Nuada at the second battle of Magh Tuireadh by blinding and slaying Balor, after which he became the leader of the Tuatha de Danaan. For 10 points, identify this father of Cuchulainn, a Celtic hero considered cognate to the Welsh Lleu Llaw Gyffes.
This figure ordered Brian, Iuchar, and Iucharba to seek out a number of weapons, then refused to heal the injuries they incurred, thus avenging his father's death.
Lugh [or Lamfhada; Lugaidh; Lonnbeimnech; Lonnansclech; Samhildanach; or mac Ethlenn]