Born in Highspire, Pennsylvania in August 1916, Donald Keefer was the youngest of three sons of Edna (née Hood) and John E. Keefer, who worked … See more

Keefer appeared in dozens of television series. He also had small roles in some feature films, including Woody Allen's Sleeper. … See more

On May 7, 1950, Keefer married the actress Catherine McLeod, and the couple remained married for 47 years, until her death on May 11, … See more

• Death of a Salesman (1951) - Bernard
• The Girl in White (1952) - Dr. Williams
• Riot in Cell Block 11 (1954) - Reporter See more

Keefer's Gunsmoke appearances included three half-hour episodes and seven full one-hour broadcasts that aired from 1957-1973
• "Wrong Man" (13 April 1957) - as the character Sam Rickers
• "Bad Sheriff" (7 January 1961) - Chet See more

On Angel, Keefer portrayed the neighbor "George", husband of "Susie", a character played by Doris Singleton, a veteran of the original I Love Lucy series. Marshall Thompson (1925–1992) … See more

Keefer appeared as Cromwell in the 1968 episode "Assignment: Earth" of the NBC science fiction series Star Trek. Earlier, he had roles in the following three episodes of CBS's The Twilight Zone: as Dan Hollis in "It's a Good Life" (1961), as Spiereto in "Passage on the Lady Anne See more