Metamorphoses Book 11: Daedalion
Peleus sought refuge after he murdered his brother, and he ended up in King Ceyx's court. Ceyx welcomed the descendant of Jove and shared a story of his brother, Daedalion. Daedalion was a cruel, warlike man, and his daughter was impregnated by both Apollo and Mercury. She gave birth to twins, Apollo and Mercury each fathered one of the sons. When the girl considered herself more beautiful than Diana for attracting the attention of two gods, Diana killed her. In his grief, Daedalion flung himself from a cliff, and Apollo changed him to a hawk.