Dyfed

Dyfed was a mythological kingdom in Welsh tradition, ruled by Pwyll, who became known as Pwyll Pen Annwn ("Head of Annwn") after exchanging shapes and kingdoms with Arawn, the king of the underworld (Annwn). Pwyll's story is part of The Four Branches of the Mabinogi, a collection of Welsh narratives. He married the fairy princess Rhiannon and had a son, Pryderi, who eventually succeeded Pwyll as ruler of both Dyfed and Annwn. Historically, Dyfed was an Irish kingdom in southwestern Wales following the cessation of Roman rule. It later became part of the kingdom of Deheubarth in the 10th century.1234