He was born into an acclaimed acting family in Beverly Hills
in 1932. His father was the famed stage and film actor John (The Great
Profile) Barrymore and his mother silent screen star Dolores
Costello. His father's siblings were Academy Award-winning actors Lionel
and Ethel. His grandfather was silent film star Maurice Costello and his
aunt 1920s star Helene Costello. His older half-sister was the troubled,
alcoholic actress Diana Barrymore. He was also the usually-estranged father
of actress Drew Barrymore.