Gwyn ap Nudd is a figure from Welsh mythology, often depicted as a king of the Otherworld and a leader of the Wild Hunt. He is associated with the hunt and is sometimes portrayed as a protector of lost souls. His name translates to "Gwyn, son of Nudd," with Nudd being a deity linked to the underworld. In folklore, Gwyn ap Nudd is known for his connections to the fairy realm and is often seen as a guide for souls transitioning to the afterlife. He is also linked to the Mabinogion, a collection of medieval Welsh tales, where his character plays a significant role in various stories.