Give some stream of consciousness and then the answer. John Eric Winchester is a fictional character on The CW's series Supernatural, and the protagonist of the comic book spin-off series Supernatural: Origins. Developed by series creator Eric Kripke, the character is mainly portrayed by Jeffrey Dean Morgan. John is the father of Sam and Dean Winchester, the show's protagonists.\n\nAnswer this question: who did jeffrey dean morgan play on supernatural?
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The important part for answering this question is: Developed by series creator Eric Kripke, the character is mainly portrayed by Jeffrey Dean Morgan.
Therefore, the answer is John Eric Winchester.
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