Father of daughters Page Forsythe and Brooke Forsythe with Julie Warren. He also has a son named Dall Forsythe with Parker McCormick.
Graduated from Abraham Lincoln High School in Brooklyn, New York, in 1934.
Had met future "Dynasty" (1981) co-star, Linda Evans, and her family, when she was only 15 years old. At the time, she guest-starred alongside Forsythe on an episode of "Bachelor Father" (1957).
Had successfully underwent quadruple bypass surgery, after developing heart problems. [1979].
Has not smoked since 1982, when he quit following his doctor's advice as he was at strong risk of developing emphysema.
He and Aaron Spelling were close friends from 1976.
He attended the University of North Carolina in Chapel Hill but left after three years to be an announcer for the Brooklyn Dodgers at Ebbets Field in Brooklyn, New York.
He died only six days before his "Dynasty" (1981) co-star Christopher Cazenove.
He has 12 hobbies: traveling, flying, golfing, collects art, thoroughbred racing, playing tennis, riding horses, playing baseball, swimming, dining out, spending time with family and gardening.
He loved sports, since he was a child.
He was an original member of the Actors Studio in New York City.
He was born with very small coronary arteries that were inadequate for the supply of blood his body needed.
His "Dynasty" (1981), co-star, Linda Evans, would also guest-star alongside him on the same episode of "The Love Boat" (1977), in 1983.
His daughters, Page Forsythe and Brooke Forsythe, were both huge fans of The Beatles and Blood Sweat & Tears.
His father worked as a ditch digger in a cemetery during the Depression.
His father, Samuel Jeremiah Freund, worked with the Dupont Company and was a New York City stockbroker. His mother Blanche Materson was a housewife.
His third wife, Nicole Carter, died May 11, 2010, just five weeks after he died.
His third wife, Nicole Carter, is 22 years his junior.
His two siblings smoked a lot, which eventually led to the cancer that took over their lives.
Immediately following the death of his second wife, Julie Warren, in 1994, ex-"Dynasty" (1981) co-star, Linda Evans lived in Forsythe's guest house for a couple of days.