Overview
In Greek mythology, Iolaus (; Ancient Greek: Ἰόλαος Iólaos) was a Theban divine hero. He was famed for being Heracles' charioteer, squire and for helping with some of his Labors, as well as for being one of the Argonauts.
Family
Iolaus was the son of Iphicles and Automedusa, daughter of King Alcathous of Megara. He married Megara, and through her became the father of a Leipephilene. Through this daughter, Iolaus was considered to have fathered the mythic and historic line of the kings of Corinth, ending with Telestes.
Mythology
Relationship with Heracles
Iolaus often acted as Heracles' charioteer and companion. Plutarch, describing the Theban Sacred Band in his life of Pelopidas, said "It is a tradition likewise that Iolaus, who assisted Hercules in his labours and fought at his side, was beloved of him; and Aristotle observes that, even in his time, lovers plighted their faith at Iolaus's tomb."
From Wikipedia (CC BY-SA 4.0).