John Marley
John Marley (October 17, 1907 – May 22, 1984) was an American actor who was known for his role as Phil Cavalleri in Love Story and as Jack Woltz— the defiant movie mogul who awakens to find the severed head of his prized horse in his bed—in The Godfather (1972). He starred in John Cassavetes' breakthrough feature Faces (1968) and appeared in The Glitter Dome (1984). Description above from the Wikipedia article John Marley, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Sea Hunt
Bonanza
Perry Mason
The Twilight Zone
Mannix
The Alfred Hitchcock Hour
Ironside
Hawaii Five-O
The Incredible Hulk
The Dick Cavett Show
Dr. Kildare
The F.B.I.
Cheyenne
Cannon
Robert Montgomery Presents
The Godfather
Rawhide
No Image
Bob Hope Presents the Chrysler Theatre
The Defenders
The Philco Television Playhouse
The Outer Limits
Thriller
Medical Center
Vega$
The Name of the Game
Kraft Suspense Theatre
McCloud
Gunsmoke
One Step Beyond
Peter Gunn