Eudaf Hen

Eudaf Hen (Eudaf "the Old") or Octavius is a figure of Welsh tradition. He is remembered as a King of the Britons and the father of Elen Luyddog and Conan Meriadoc in sources such as the Welsh prose tale The Dream of Macsen and Geoffrey of Monmouth's Latin chronicle Historia Regum Britanniae. He also figures into Welsh genealogies. The name Octavius in Geoffrey of Monmouth Historia is a corruption and faux-Latinization of Old Welsh/Breton Outham (later spelled Eudaf). According to the medieval Welsh genealogy from Mostyn MS. 117, Eudaf was a direct ancestor of King Arthur.