David Cassidy was an American actor, singer, songwriter, and guitarist. He was known for his role as Keith Partridge, the son of Shirley Partridge (played by his stepmother Shirley Jones), in the 1970s musical-sitcom The Partridge Family. David was an iconic teen idol in the 1970’s with sellout concert successes in major arenas around the world. He maintained a career spanning movies, theatre, music, writing, and directing..