When British Royals Have Access To Each Other’s Closets
Male-line descendants of King George V, including women until they marry, bear the surname Windsor. The surname of the male-line descendants of Queen Elizabeth II, except for women who marry, is Mountbatten-Windsor, reflecting the name taken by her Greek-born husband, Prince Philip, Duke of Edinburgh, upon his naturalization. A surname is generally not needed by members of the royal family who are entitled to the titles of prince or princess and the style of His or Her Royal Highness. Such individuals use surnames on official documents such as marriage registers