The bastard son of Orestes and Erigone, is said to have led a colony of Aeolians to Thrace. He was the father of Echelatus and Damasias (Damasius). Penthilus is the mythical ancestor of the Penthilides, an ancient dynasty of kings on Lesbos.
- Aristotle. Politics v, 8, 13.
- Pausanias. Description of Greece ii, 18.6; iii, 2.1; v, 4.3; vii, 6.2.
- Strabo. Geography xiii, p. 582.
- Tzetzes on Lycophron, 1374.