Prince Philip death: Why was the Duke of Edinburgh not a king? Chelsea Ritschel Gallery As the world mourns the death of the Queen’s husband at the age of 99, attention is being shone on the life and duties of the Duke of Edinburgh. The royal family announced the royal’s passing in a statement Friday, which read: “It is with deep sorrow that Her Majesty The Queen announces the death of her beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh. “His Royal Highness passed away peacefully this morning at Windsor Castle. Further announcements will be made in due course. The Royal Family join with people around the world in mourning his loss.”