Lud , according to
Geoffrey of Monmouth's legendary
History of the Kings of Britain and related medieval texts, was a king of
Britain in pre-
Roman times who founded
London and was buried at
Ludgate. He was the eldest son of Geoffrey's King
Heli, and succeeded his father to the throne. He was succeeded, in turn, by his brother
Cassibelanus. Lud may be connected with the
Welsh mythological figure
Lludd Llaw Eraint, earlier Nudd Llaw Eraint, cognate with the
Irish Nuada Airgetlám, a king of the
Tuatha Dé Danann, and the Brittonic god
Nodens. However, he was a separate figure in Welsh tradition and is usually treated as such.