‘Gwrfoddu the Old, Gwrfoddu the Elder’
Gwrbothu Hên, Gwrfoddhu, Gwrfoddu the Old, Gwrfoddw the Old, Gwrvoddw
A king by the name Gwrfoddw (610-615) were probably used as a base for this character.
Gwrfoddw (Latin: Gurvodius rex Ercyg) died about 619. He was the king of Ergyng, a kingdom in south-east Wales. He usurped the throne from Gwrgan ap Cynfyn.
Culhwch and Olwen | Late 11th century