HSH Princess Caroline of Monaco, the eldest child of Prince Rainier and Princess Grace, married commoner Philippe Junot on June 29, 1978. The bride was 17 years his junior. They divorced in 1980. She was married again in 1983 to Stefano Casiraghi and they had 3 children together. He was killed in a speed boat accident in 1990 at the age of 30. Princess Caroline was married a third time in 1999 to Prince Ernst August of Hanover, and they have a daughter, Princess Alexandra.