Roger Ewing, the actor who portrayed Deputy Marshal Thad Greenwood on the long-running television Western “Gunsmoke,” died December 18, 2025, in Morro Bay, California. He was 83.
Born January 12, 1942, in Los Angeles, Ewing stood 6 feet 4 inches tall and brought a lanky, earnest presence to the screen that made him memorable in an era dominated by classic television Westerns. His path to acting began in an unexpected venue: as a senior in high school, he played Chester in a variety show satire of “Gunsmoke.” He was already a devoted fan of the series, watching it every Saturday night.
After spending a year in college and working as a lifeguard, Ewing turned his attention to professional acting. He made his screen debut in 1964 with an uncredited role in “Ensign Pulver,” where his character stuck a beer bottle in a duck’s mouth. That same year, he began appearing in guest roles on popular television shows including “Bewitched,” “The Baileys of Balboa,” “The Bing Crosby Show” and “Rawhide.” He also appeared in the film “None But the Brave.”
Ewing first appeared on “Gunsmoke” in February 1965 as a character named Ben Lukens. The producers were impressed enough with his performance that they brought him back later that year in a different role. In October 1965, during the third installment of season 11, he was introduced as Thad Greenwood, a deputy marshal and handyman who would become a regular character on the CBS series.
At just 23 years old when cast, Ewing brought youth and optimism to the established ensemble that included James Arness as Matt Dillon, Amanda Blake, Milburn Stone and Ken Curtis. His character arrived in Dodge City as the deputy and son of an elderly Oklahoma sheriff, pursuing four vandals who had caused his father to have a fatal heart attack. However, Thad learned his warrant was not executable in Dodge. After the four criminals were either killed or captured for cattle theft, Marshal Dillon invited Thad to remain as a deputy.
Ewing’s casting came at a pivotal moment for “Gunsmoke.” He replaced Burt Reynolds, who had played Quint Asper on the series, filling what producers called the “younger actor” slot. Behind the scenes, tensions between star James Arness and CBS over salary and ownership of the series created uncertainty about the show’s future. Producers thought Ewing might potentially help replace Arness if the dispute could not be resolved.
The contract dispute brought “Gunsmoke” to the verge of cancellation during what was also a rare rough stretch in ratings for the Western series. When Arness and the network eventually resolved their differences, the character of Thad Greenwood was phased out. Ewing appeared in 50 episodes from 1965 to 1967, spanning two seasons as a regular cast member.
Buck Taylor subsequently joined the series as Newly O’Brien, replacing Ewing’s character. Taylor remained with “Gunsmoke” through its cancellation in 1975 after 20 seasons on the air.
During his brief time in the spotlight, Ewing was reportedly considered by director John Schlesinger for the role of Joe Buck in “Midnight Cowboy” in 1969, though the part ultimately went to Jon Voight. He also appeared as a bachelor on a 1968 episode of “The Dating Game,” where future “Bionic Woman” star Lindsay Wagner selected someone else.
After leaving “Gunsmoke,” Ewing continued acting with appearances on “The Mothers-in-Law” and “Death Valley Days.” His film work included “Smith!” in 1969, starring Glenn Ford, and “Play It as It Lays” in 1972, featuring Tuesday Weld and Anthony Perkins. Early in his career, Ewing said he was often cast as “a gangling misfit who looked tall and dumb.”
Following his final film role in 1972, Ewing made a significant career change, leaving acting behind to pursue photography. This new passion took him on extensive travels throughout Europe, Russia, Mexico and the South Pacific, where he captured images far removed from the dusty streets of Dodge City that had made him recognizable to television audiences across America.
Ewing remained in Morro Bay, California, where he became active in local politics. In 2003, he ran for a city council seat in the coastal community, demonstrating his commitment to civic engagement in his later years.
Following news of his death, friends remembered Ewing fondly. “Roger brought many of his own characteristics to the role of Thad Greenwood on the epic western ‘Gunsmoke.’ Shy, quiet, funny, and endearingly optimistic, Roger, as Thad Greenwood, will live on, forever young, in ‘Gunsmoke’ reruns throughout the world.”
“Gunsmoke” remains one of the longest-running and most beloved Western series in television history. The show, which aired on CBS, helped define the genre during the golden age of television Westerns and launched or sustained the careers of numerous actors. While Ewing’s tenure on the series was relatively brief compared to its two-decade run, his portrayal of the earnest young deputy left a lasting impression on fans of the classic Western series.
The character of Thad Greenwood represented a specific moment in “Gunsmoke’s” evolution, arriving during a period of transition and uncertainty for the series that would ultimately continue for another eight seasons after Ewing’s departure. His work on the show continues to reach new audiences through reruns and streaming platforms, ensuring that his contribution to television history endures.
