@jay_peper @nrmacdonald Briton yes but not Welsh. He was king of Logres which is supposed to be the south and east of present-day England, and, through his mother, also ruled over Cornwall (Many versions make him rule over all the Britons though, including Wales, Cambria and Brittany - where most of Lancelot-related events happen)
@Ash_Crow @jay_peper
all as true as you wish