Question: Preacher was an adaptation of the comic book written by the writer of what nationality?
Sentence (from "Garth Ennis"): Garth Ennis (born 16 January 1970) is a Northern Irish-born naturalized American comics writer, best known for the Vertigo series "Preacher" with artist Steve Dillon and his successful nine-year run on Marvel Comics' Punisher franchise.
Relevant evidence: Yes