Marcionism or Marcionite Christianity was an early Christian dualistic belief system originating with the teachings of Marcion of Sinope in Rome around 144 CE. Marcion was an early Christian theologian, evangelist, and an important figure in early Christianity. Marcion was born between about 85 and 100 and died around 160. He is reported to have been the son of a bishop of Sinope in Pontus, though nearly all biographical detail about him derives from hostile sources and from a "heretic legend" that later writers extrapolated from his works; Sinope itself first appears as his birthplace in late antique sources. About the middle of the 2nd century (140–155) he traveled to Rome. Irenaeus and other patristic writers present him there as a follower of the Syrian gnostic Cerdo, from whom he is said to have taken the doctrines of the evil creator and the alien good God, but recent scholarship regards the derivation as uncertain and probably unhistorical. Marcion preached that the benevolent God of the Gospel who sent Jesus into the world as the savior was the true Supreme Being, different and opposed to the malevolent deity, the Demiurge or creator deity, identified with Yahweh in the Hebrew Bible. He considered himself a follower of Paul the Apostle, whom he believed to have been the only true apostle of Jesus.