In Celtic mythology, Lir ("the sea") was the god of the sea, father of Manannan mac Lir, Bran, Branwen and Manawydan by Penarddun and a son of Danu and Beli. He was held captive by Eurosswydd until Penarddun slept with him, giving birth to twins, Nisien and Efnisien. He had a daughter named Fionnuala by an unknown mother.

Other names

• Llyr (Welsh)

Llyr Llediaith. (Llyr Lleddiarth, King Lear, Lear II, Tasciovanus, Half-Speech) Said to be the son of Baran, or of Ceri. Llediaith is said to mean “the act of speaking Welsh with a foreign accent,” thus the name "Half-Speech." He was educated in Rome by Augustus Caesar. His home was at Dunraven Castle, which was situated on a hill called Twyn Rhyvan (the Hill of Rome) located in Glamorgan. Probably the same as Leir of Britain.