Iudgual, King of Ynys Manaw
(Born c.AD 690)
(Welsh: Idwal; Latin: Idovellaunus; English: Judwald)

Iudgual, son of King Tutgual map Anaraud, was the last King of Ynys Manaw from the Royal House of Ceretic Guletic. He succeeded his father in the mid-8th century but, having failed to produce an heir, the throne later passed to his sister, Celemion, and her husband, Prince Sandde of South Rheged, who were then living in exile in Powys.