In the new Biography documentary special, 'David Cassidy: The Last Session,' which airs Monday at 9/8c on A&E, Cassidy admitted to lying about having dementia to hide the fact that he had a drinking problem. The former teen idol died in November 2017 from organ failure. “I did this to myself,” he said.

• Singer, Television Actor
  (1950–2017)

Outlaw Butch Cassidy, also known as Robert Leroy Parker, partnered with the Sundance Kid to rob banks and trains in the early 1900s.

• Thief
  (1866–c. 1908)

Shaun Cassidy became a pop music sensation in the 1970s, much like his older half-brother David Cassidy. His first two albums sold more than 5 million copies.

• Screenwriter, Singer, Television Actor, Television Producer
  (1958–)

Ted Cassidy was a 6’9” American actor known for his work in The Addams Family TV series and the film Butch Cassidy and the Sundance Kid.

• Television Actor
  (1932–1979)