Coslough Johnson

 was a writer on Bewitched. He penned the episode, "Sam's Spooky Chair" (1966).

Biography
Coslough Johnson was born on January 20, 1929, in Benton Harbor, Michigan. He is a writer and producer, known for Rowan & Martin's Laugh-In (1967), The Sonny and Cher Comedy Hour (1971) and The Sonny and Cher Show (1976). He won a primetime Emmy in 1968 for Outstanding Writing Achievement in Music or Variety for Laugh-In (1967). He is the twin brother of another Bewitched alumni, Arte Johnson.

 January 4, 2020 

Source
Coslough Johnson on the Internet Movie Database. Retrieved on January 4, 2020.