Leudon (Leudonus in Latin and Llewddyn Luyddawg in Welsh) is the half-pagan king who gave his name to Leudonia (Lothian) according to the anonymous, incomplete Life of St. Kentigern. King Leudon is the father of Taneu (Thaney), the mother of St. Kentigern by Owein son of Urien. In origin Leudon may be identical with King Lot of Lothian, the father of Gawain, and the identification is explicit in John Major’s History of Great Britain.