The Britons or Brythons were the Brythonic-Celtic-speaking people of what is now England, Wales and southern Scotland, whose ethnic identity is today maintained by the Welsh, Cornish and Bretons. The title Rex Britannorum (King of the Britons) was used (often retrospectively) to refer to the most powerful ruler among the insular Britons, both before and after the Roman occupation up until the Norman Conquest of England. The same title was also used to refer to some of the rulers of Brittany in the 9th century, but there it is best translated as King of the Bretons. This page concerns only rulers in Britain (with the exception of Riothamus, who may have ruled both in Britain and on the Continent.)