 After King Paul's death, he declared himself heir presumptive to the Greek throne, on the pretext that female dynasts had been unlawfully granted succession rights in 1952.Peter eventually separated from his wife and died childless in London.A member of the House of Schleswig-Holstein-Sonderburg-Glücksburg, Prince Peter was the elder child and only son of Prince George of Greece and Denmark and the wealthy author and psychoanalyst Princess George (née Princess Marie Bonaparte).