'Llyr' definitions:

Definition of 'Llyr'

(from WordNet)
noun
Celtic deity who was the father of Manawydan; corresponds to Irish Lir

Definition of 'Llyr'

From: GCIDE
  • Llyr \Llyr\ prop. n. (Welsh mythology) the sea personified, father of Manawydan; corresponds to the Irish Ler. [WordNet 1.5]