With King Charles III assuming the role of British monarch immediately after his mother’s death Thursday, his eldest son, Prince William, becomes heir to the throne.
William, 40, has been second in line to the throne since birth. He is the first of two sons born to Charles and Diana, Princess of Wales. His younger brother, Harry, became fifth in line to the throne Thursday, after William’s three children, Prince George, 9, Princess Charlotte, 7, and Prince Louis, 4.
Until the death of Queen Elizabeth II, William had been known as the Duke of Cambridge since just before he married Kate Middleton. His wife became Duchess of Cambridge. Now that his father has become king, William inherits the Duke of Cornwall title, which comes with an estate of 150,000 acres and an annual income of about 20 million pounds ($27 million). Catherine becomes Duchess of Cornwall.