 They were sometimes called Minyans, after a prehistoric tribe in the area.After the death of King Cretheus, the Aeolian Pelias usurped the throne from his half-brother Aeson and became king of Iolcus in Thessaly (near the modern city of Volos).Because of this unlawful act, an oracle warned him that a descendant of Aeolus would seek revenge.