Overview
- Ewing was best known for portraying deputy marshal Thad Greenwood in 50 episodes of Gunsmoke between 1965 and 1967.
- He first appeared on the series in February 1965 as Ben Lukens and was introduced as Thad that October during season 11.
- Coverage notes his role was developed during a contract dispute involving James Arness and CBS, after which the character was phased out.
- Born in Los Angeles on Jan. 12, 1942, he made his onscreen debut in an uncredited role in the 1964 film Ensign Pulver and later appeared in Smith! and Play It as It Lays.
- He left acting by 1972 to pursue photography, lived for decades in Morro Bay, California, and ran for a city council seat there in 2003.