Llŷr is a figure from Welsh mythology, often associated with the sea and known as a god of the ocean. He is considered the father of several important characters in Welsh legends, including Bran the Blessed and Manawydan. Llŷr's stories are part of the Mabinogion, a collection of medieval Welsh tales. In these tales, Llŷr embodies themes of wisdom and the complexities of family relationships. His character often reflects the struggles and challenges faced by his children, particularly in their quests and adventures. Llŷr's legacy continues to influence Celtic folklore and modern interpretations of ancient myths.