Throughout her acting career of 16 years, Marilyn Monroe  participated in 29 movies, 24 of these during the first 8 years of her career. Born Norma Jeane Mortenson on June 1, 1926 in Los Angeles General Hospital, her mother, Gladys, listed the fathers address as unknown. Marilyn would never learn the true identity of her father. However, some biographers, such as Donald H. ... http://www.squidoo.com/monroe Wed, 20 Aug 2008 21:42:21 -0600 FeedCreator 1.7.2 Mon, 20 Aug 2007 23:54:03 -0600 http://www.squidoo.com/monroe Throughout her acting career of 16 years, Marilyn Monroe  participated in 29 movies, 24 of these during the first 8 years of her career. Born Norma Jeane Mortenson on June 1, 1926 in Los Angeles General Hospital, her mother, Gladys, listed the fathers address as unknown. Marilyn would never learn the true identity of her father. However, some biographers, such as Donald H. Wolfe in The Last Days of Marilyn Monroe, believe that her biological father was Charles Stanley Gifford, a salesman for RKO Pictures where Marilyn's mother Gladys worked as a film-cutter. Monroe's birth certificate lists Gladys's second husband, Martin Edward Mortenson, as the father. Marilyn legally changed her name to Marilyn Monroe on February 23, 1956. Mon, 20 Aug 2007 23:54:03 -0600