John Dehner was born John Forkum on November 23rd, 1915 in Staten Island, New York. His father Leroy was an artist. His career allowed John to attend school in Norway and France. John was also a gifted artist, and pianist. He studied at the Grand Central School of Art in New York, while simultaneously getting into acting.

Forkum's talent took him west. He found animation work at Disney before landing a job at KMPC. At the radio station, John did everything from dramatic work to newscasting. He later earned a Peabody Award for his coverage of the first U.N. Conference.

He spent the last half of World War II in the Army. After being honorably discharged, he returned to California. Now using his mother's maiden name, Dehner, hoped to act. Lawrence Dobkin remembered how difficult it was for an outsider to find Hollywood work.

But Dehner had good timing. Thanks to William Paley's Packaged Program initiative, CBS was piloting dozens of shows. By 1948, he was a regular on the network, where a new crop of directors like Elliott Lewis and Norman MacDonnell were joining veterans like Bill Robson and Bill Spier. On August 1st, Dehner appeared on Escape in Bill Robson's production of "The Man Who Would Be King."

On April 11th, 1950 Dehner appeared in an episode of The Adventures of Philip Marlowe. It was noted because Bill Conrad subbed for star Gerald Mohr. The pair's relationship went back to their days at KMPC. By the early 1950s, Dehner had appeared on The NBC University Theater, The Screen Directors Playhouse, Escape, and The Whistler. Dehner became a regular on Gunsmoke after its 1952 debut. This is from the December 27th, 1952 episode called, "The Cabin."

Dehner spent the next six years playing a variety of parts on shows like Gunsmoke and Johnny Dollar. He was a toothless drunk, dashing leading man, vile psychopath, pillar of the community, and no nonsense anti-hero.

In 1955 Gunsmoke's success led CBS and director Norman Macdonnell to launch a second adult western called Fort Laramie. John Dehner auditioned for the lead on July 25th, 1955. But he was worried about being typecast and Captain Lee Quince went to Raymund Burr. With no sponsorship Fort Laramie lasted only ten months before being canceled after the October 28th, 1956 episode.

Gunsmoke remained CBS's only western until February of 1958 when Dehner was cast as J.B. Kendall in Antony Ellis' production of Frontier Gentleman. Kendall was an English journalist writing for the London Times, weaving his way through the Western territories of the US in the late nineteenth century.

In the September 1st, 1958 issue of Broadcasting Magazine WCBS Radio in New York took out a local ad touting their station as having the city's most persuasive radio salesmen. They also hailed their star personalities like Jack Sterling, Lanny Ross, Jim Lowe, Martha Wright, and Galen Drake. More and more network programming was being left to local stations. William N. Robson remembered that time.

Frontier Gentleman lasted nine months. In November, the network announced it was dropping several shows, including Nora Drake, Our Gal Sunday, Backstage Wife, The FBI in Peace and War, Indictment, The Galen Drake Show, City Hospital, and Frontier Gentleman