Shaun Cassidy (born September 27, 1958) is an American actor, singer, writer, and producer. He is the eldest son of Academy Award winning actress Shirley Jones, and the second son (his older half-brother is David Cassidy) of Tony award-winning actor Jack Cassidy. He is best known his cult favorite TV show as American Gothic, Invasion and more recently the sitcom Ruby and the Rockits.
Cassidy grew up in Los Angeles and New York City in an Irish-American family. In addition to his half-brother, David Cassidy, Shaun has two (full) brothers: Patrick and Ryan Cassidy.
Shaun is married to producer Tracey Turner, and they have two sons, Caleb and Roan, and a daughter, Lila. Shaun has been married twice previously, to Susan Diol and Ann Pennington. He is also the stepfather of Jessica Wilson Kruse and father of Caitlin, Jake, and Juliet Cassidy.