The Gospel of Barnabas identifies Capernaum with the cemetery where there was the Gerasene demonic.
21. 1. Jesus went up to Capernaum, and as he drew near to the city behold there came out of the tombs one that was possessed of a devil,
Additional reason to think that the incipit of Marcion's gospel started with the descent of Jesus into the Hades, where he freed only the people punished by the demiurge..