Passaleon

In Perceforest, an inhabitant of pre-Roman Britain, son of Estonne, Lord of the Scottish Wilderness. He was given by Zephyr to Morgan Le Fay. He became the lover of her daughter and through her an ancestor of Merlin.

He slew Bruyant the Faithless, who had killed his father. His experiences included a tour of Tartarus (the Underworld of classical mythology), when a child, presumably by Morgan.