A youth from the town of Dyme. He was loved by Heracles, who outliving Sostratus made him his tomb and gave him some hair from his head as a primal offering. In Pausanias' time there was a slab on the top of the mound, with a figure of Heracles in relief. The locals also sacrificed to Sostratus as a hero.
- Pausanias. Description of Greece vii, 17.8.