Elizabeth is a maternal first cousin of Prince Edward, Duke of Kent, and also a maternal second cousin of Queen Sofía of Spain and Charles, Prince of Wales, making Christina a third cousin of Felipe VI of Spain and Prince William, Duke of Cambridge. Through her maternal grandfather Prince Paul of Yugoslavia, of the House of Karađorđević, Christina is also a great-great-great-granddaughter of Karageorge, who started the First Serbian Uprising against the Ottoman Empire in 1804.