Mannanan Mac Lír

Mannanan Mac Lír is the old god of the Irish Sea and a member of the Tuatha Dé Danann. He is the foster father of Lugh Lamhfada and had three of his own sons who turned into swans and died before he adopted Lugh named The Children Of Lír. He is the Irish equivalent to the Welsh Manawydan Fab Llŷr, Gallic Candotis, and the Celtic equivalent of Ægir and Posiden.