Little is known of Antinous's life, although it is known that he was born in Claudiopolis (present day Bolu, Turkey), in the Roman province of Bithynia et Pontus. He was probably introduced to Hadrian in 123, before being taken to Italy for a higher education. He had become the favourite of Hadrian by 128, when he was taken on a tour of the Roman Empire as part of Hadrian's personal retinue. Antinous accompanied Hadrian during his attendance of the annual Eleusinian Mysteries in Athens, and was with him when he killed the Marousian lion in Libya. In October 130, as they were part of a flotilla going along the Nile, Antinous died amid mysterious circumstances. Various suggestions have been put forward for how he died, ranging from an accidental drowning to an intentional human sacrifice or suicide.