The Prince Charles, Prince of Australia (born November 14, 1948) is the eldest son and heir apparent to Empress Elizabeth. Since 1958, his title has been HRH The Prince of Australia. In the Malaya Archipelago, he is referred to as the Duke of Java. The Prince Charles is married to Princess Diana (formerly the Lady Diana Spencer) and they produced two sons, Prince William, the Duke of Sydney and Prince Harry of Australia.