Question: The creator of character John Constantine, born in 1955, also worked on what comic? 
Sentence (from "Hellblazer"): Its central character is the streetwise magician John Constantine, who was created by Alan Moore and Stephen R. Bissette, and first appeared as a supporting character in "The Saga of the Swamp Thing" #37 (June 1985), during that creative team's run on that title.
Relevant evidence: Yes