Jeff, a native of Brooklyn, attended Erasmus High School, where his academic journey laid the groundwork for his future endeavors. Following high school, he embarked on a two-year drama course, honing his skills in the world of theater. His early acting career consisted of working in stock companies, refining his craft and gaining valuable experience.
Jeff's next notable role was that of an officer in World War II, where he played a pivotal part in the war effort. After his military service, he transitioned back to acting, taking on a variety of roles in radio dramas and comedies. His hard work and dedication eventually caught the attention of Universal Studios, which signed him to a contract.
The 1950s marked a significant turning point in Jeff's career, as he began to make a name for himself in the film industry. He appeared in a string of westerns and action pictures, showcasing his versatility as an actor. One of his most notable roles during this period was as Cochise in Broken Arrow (1950),for which he received an Academy Award nomination.
Jeff's success in Broken Arrow led to him being cast in two sequels: The Battle at Apache Pass (1952) and Taza, Son of Cochise (1954). His striking appearance, complete with premature gray hair and a sun-kissed complexion, made him an ideal candidate for westerns and action films. However, the studio also saw potential in him for other genres, including soap operas and costume dramas.
Throughout his film career, Jeff shared the screen with some of Hollywood's most iconic leading ladies, including Maureen O'Hara, Rhonda Fleming, Jane Russell, Joan Crawford, and June Allyson. After completing his final film, Merrill's Marauders (1962),Jeff's life was tragically cut short at the age of 42 due to blood poisoning, which developed as a complication following an operation for a slipped disc.