Actress Grace Kelly marries Prince Rainier of Monaco.

Grace Patricia Kelly, also known as Grace of Monaco, was an American actress and Princess of Monaco as the wife of Prince Rainier III from their marriage on April 18, 1956, until her death in 1982. Prior to her marriage, she achieved stardom in several significant Hollywood films in the early to mid-1950s. She received an Academy Award and three Golden Globe Awards, and was ranked 13th on the American Film Institute's 25 Greatest Female Stars list.

Rainier III was Prince of Monaco from 1949 to his death in 2005. Rainier ruled the Principality of Monaco for almost 56 years.