Clifford Parker Robertson III became a fairly successful leading man through most of his career without ever becoming a major star. Following strong stage and television experience, he made an interesting film debut in a supporting role in
Picnic (1955). He then played
Joan Crawford's deranged young husband in
Autumn Leaves (1956) and was given leads in films of fair quality such as
The Naked and the Dead (1958),
Gidget (1959) and
The Big Show (1961).
He was born to Clifford Parker Robertson Jr. and Audrey Olga (nee Willingham) Robertson. Robertson Jr. was described as "the idle heir to a tidy sum of ranching money". They have divorced when he was a year old, and his mother died of peritonitis a year later in El Paso, Texas. Young Cliff was raised by his maternal grandmother, Mary Eleanor Willingham as well as an aunt and uncle.
He supplemented his somewhat unsatisfactory big-screen work with
interesting appearances on television, including the lead role in
Days of Wine and Roses (1958). Robertson was effective playing a chilling petty criminal obsessed with avenging his father in the B-feature
Underworld U.S.A. (1961) or a pleasant doctor in the popular hospital melodrama
The Interns (1962). However, significant public notice eluded him until he was picked by President
John F. Kennedy to play the young JFK during the latter's World War II experience in
PT 109 (1963).
Moving into slightly better pictures, Robertson gave some of his best
performances: a ruthless presidential candidate in
The Best Man (1964), a modern-day Mosca in an updated version of
Ben Jonson's
"Volpone",
The Honey Pot (1967), and most memorably as a mentally retarded man in
Charly (1968), for which he won an Academy Award for Best Actor. His critical success with
Charly (1968) allowed him to continue starring in some good films in the 1970s, including
Too Late the Hero (1970),
The Great Northfield Minnesota Raid (1972), and
Obsession (1976).
He starred in, directed and co-produced the fine rodeo drama
J W Coop (1971) and, less interestingly,
The Pilot (1980). He remained active mostly in supporting roles, notably playing
Hugh Hefner in
Star 80 (1983). More recently, he had supporting parts in
Escape from L.A. (1996) and
Spider-Man (2002).
Robertson died on September 10, 2011, just one day after his 88th
birthday in Stony Brook, New York.