"Culhwch" is a Welsh tale from the medieval collection known as the Mabinogion. It tells the story of a young hero named Culhwch who embarks on a quest to win the hand of Olwen, the daughter of a giant. The narrative is rich with elements of Celtic mythology and features various challenges that Culhwch must overcome, often with the help of legendary figures. The story is notable for its early depiction of the Arthurian legends, as it includes characters like King Arthur and his knights. "Culhwch and Olwen" is one of the oldest stories in Welsh literature, showcasing themes of love, adventure, and the importance of kinship.