Margaret O'Brien is an American actress born on September 15, 1937. She gained fame as a child star in the 1940s, known for her performances in films like Meet Me in St. Louis and The Canterville Ghost. O'Brien's talent and charm made her a beloved figure in Hollywood. She continued to act in film and television throughout her career, showcasing her versatility as an actress. Margaret O'Brien remains a cherished part of classic American cinema.