List of legendary kings of Britain

The following list of legendary kings of Britain (Welsh: brenin y Brythoniaid or brenin Prydain) derives predominantly from Geoffrey of Monmouth's circa 1136 work Historia Regum Britanniae ("the History of the Kings of Britain"). Geoffrey constructed a largely fictional history for the Britons (ancestors of the Welsh, the Cornish and the Bretons), partly based on the work of earlier medieval historians like Gildas, Nennius and Bede, partly from Welsh genealogies and saints' lives, partly from sources now lost and unidentifiable, and partly from his own imagination (see bibliography).

Source: Wikipedia — List of legendary kings of Britain (CC BY-SA 4.0)