At least one attempt in recent years has been made to show that Prince William may be descended from King Arthur (Le Morte D’Arthur). Sir Iain Moncreiffe of that Ilk, in Royal Highness, a study of the ancestors of the future King of England, Prince William, conveniently states that it is very probable for King Arthur to be among the warrior chieftains of fifth and sixth century Britain from whom the Royal Family is descended (Moncreiffe 12). Finally, as Geoffrey Ashe has pointed out, Prince William’s middle name is Arthur, and should Prince William choose to use his middle name rather than William when he is crowned, he will be the next King Arthur (199).
Still, no direct or indisputable genealogical line connects the British royal family to King Arthur. One other possibility may exist in the theory that the King Arthur of legend is the historical Riothamus. Riothamus had a son David who then had a son Budic. This Budic lived in Britain as an exile for some time. It is possible that Budic might be an ancestor of the Tudors, and a closer look at Welsh and Breton genealogies could then give us a connection between Riothamus and the British royal family (Ashe 196).
Of course, if Cerdic is Arthur’s son, as Geoffrey Ashe has also suggested, then the British royalty would also be descended from Arthur because Cerdic was the ancestor of Alfred the Great, and through him, the British royal family. The fact that Debrett’s Peerage, the official heraldic society in Britain, backed Ashe’s book suggests that the British, if not the royal family itself, still wish to make this link between their present day monarch and King Arthur.
If there is a link between King Arthur and Prince William, it may be years, if ever, before it will be discovered or researched thoroughly enough to be convincing. It also seems unlikely that a tradition of descent that does not seem to have begun until Henry II in the twelfth century is any more than a convenient forgery. If there is a connection, it is probably through the Welsh Tudor family, and it is there that the greatest scrutiny may need to be used.
For more about the British royal family’s many attempts over the last thousand years to claim descent from King Arthur, be sure to read my book King Arthur’s Children available at www.ChildrenofArthur.com.