https://en.wikipedia.org/wiki/Maximilian,_Margrave_of_Baden
Maximilian, Margrave of Baden (Maximilian Andreas Friedrich Gustav Ernst August Bernhard; born 3 July 1933), is the elder son of Berthold, Margrave of Baden and Princess Theodora of Greece and Denmark.Through his mother, he is the eldest living nephew of Elizabeth II and the late Prince Philip, Duke of Edinburgh, and is first cousin to Charles, Prince of Wales.