Brydain's father was Aedd Mawr. He was an only child. Brydain is no longer alive.
General Notes
He settled the island at an early date and being a great legislator aswell as warrior, according to tradition gave his name to the entireisland, which has since been corrupted into Britain. Source: Magna Charta, Parts I & II, (1945) John S. Wurts, page 158