Dumnagual Hen, King of Strathclyde
(Born c.AD 465)
(Welsh: Dyfnwal; Latin: Domnovellaunus; English: Donald)

Dumnagual Hen (the Old) was the son of King Cinuit of Strathclyde. Though his father's kingdom was divided upon his death, he inherited the greater part. He ruled in the late 5th century but, although he is mentioned occasionally in historical sources, very little is known about him. He had many sons, including Cedic (his successor), Guidno (father of King Neithon), Cunbelin, Garmonion, Gurgust Briadar (father of Elidyr Mwynfawr) and possibly Guidol and Deigr.