Serapion was a Patriarch of Antioch (191–211). He is known primarily through his theological writings, although all but a few fragments of his works have perished. His feast day is celebrated on October 30. Lastly, Eusebius quotes (vi.12.2) from a pamphlet Serapion wrote concerning the Docetic Gospel of Peter, in which Serapion presents an argument to the Christian community of Rhossus in Syria against this gospel and condemns it. Eusebius also alludes to a number of personal letters Serapion wrote to Pontius, Caricus, and others about this Gospel of Peter.