John Joseph Edward Cassidy, known as "Jack", (March 5, 1927 – December 12, 1976) was an American actor and singer known for his work in the theatre, television and films. He received multiple Tony Award nominations and a win as well as a Grammy Award for his work on the Broadway production of the musical She Loves Me. He also received two Primetime Emmy Award nominations. He was the father of teen idols David Cassidy and Shaun Cassidy.