Autolycus, together with his brothers, joined Heracles in his expedition against the Amazons. But after having gone astray, the three brothers dwelt at Sinope,[2] until they joined the expedition of the Argonauts.[3] Autolycus was subsequently regarded as the founder of Sinope, where he was worshipped as a god and had an oracle. After the conquest of Sinope by the Romans, his statue was carried from there by Lucullus to Rome.[4]
Hyginus confounded the brothers Autolycus, Phronius, Demoleon and Phlogius with the sons of Phrixus and Chalciope: Argus, Melas, Phrontides, and Cylindrus.[5] These were also rescued by the Argonauts on the island of Dia.
Gaius Valerius Flaccus, Argonautica translated by Mozley, J H. Loeb Classical Library Volume 286. Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1928. Online version at theio.com.