Actor Kevin Conway has died at 77 years old of a heart attack.
Entertainment Weekly confirmed that he passed away Wednesday, February 5.
Conway was born May 29, 1942 in New York City, where he studied acting at the famed Herbert Berghof Studio.
He got his breakout role in 1972 as Roland Weary in the film adaptation of Kurt Vonnegut’s Slaughterhouse-Five.
The actor might be most recognizable for his recurring role as Seamus O’Reilly in the HBO prison drama Oz.
His other television credits include roles in episodes of Miami Vice, Star Trek: The Next Generation, Law & Order and The Good Wife.
He also appeared off-Broadway productions of One Flew Over the Cuckoo’s Nest, One for the Road and Other People’s Money.
Conway received a Drama Desk Award in 1974 for his performance in When You Comin’ Back, Red Ryder?
The actor was later nominated for a Drama Desk Award in 1980 for directing Mecca on Broadway.
He also appeared in several Broadway shows, including Of Mice and Men, in which he starred as George, opposite James Earl Jones as Lennie.
He originated the role of Frederick Treves in the Broadway production of The Elephant Man, which was taped for a TV movie in 1982.
In addition to acting onstage and onscreen, he worked behind the camera as director of the 1990 film The Sun and the Moon.
Conway recently completed the documentary The Gettysburg Address, in which he voiced secretary of state Daniel Webster.