The Partridge Family is an American musical sitcom starring Shirley Jones and featuring David Cassidy.Jones played a widowed mother, and Cassidy played the oldest of her five children who embarked on a music career.It ran from September 25, 1970, until March 23, 1974, on the ABC network as part of a Friday-night lineup, and had subsequent runs in syndication.The family was loosely based on the real-life musical family The Cowsills, a popular band in the late 1960s and early 1970s.