Thessalus was one of three sons of Jason and Medea (the other two being his twin Alkimenes as well as Tisander).  When Medea decided to kill her own children as a form of vengeance for Jason leaving her, Thessalus escaped being murdered.  Sometime later after the death of Akastus, Thessalus became king of Iolcus.


Jason & Medea


  • One of Herakles' sons Thettalus is sometimes called Thessalus
  • One of Haemon's sons is also named Thessalus
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