Franz Ferdinand was the Archduke of Austria-Este whose assassination ignited the catastrophic events of World War I.
Princess Charlotte is the second child and only daughter of Prince William and Catherine, Duke and Duchess of Cambridge, and a key member of the British Royal Family.
Prince Louis is the youngest child of Prince William and Catherine, Duke and Duchess of Cambridge, and fifth in line to the British throne.
Edward the Black Prince was a valiant English nobleman, son of King Edward III, and renowned military commander in the Hundred Years' War, admired for his chivalry and prowess in battle.