Eurystheus

'broad strength', IPA: [eu̯rystʰěu̯s]) was king of Tiryns, one of three Mycenaean strongholds in the Argolid, although other authors including Homer and Euripides cast him as ruler of Argos.

Eurystheus was the son of King Sthenelus and Nicippe (also called Antibia[1] or Archippe[2]), and he was a grandson of the hero Perseus.

[8] The arena for the actions that would bring about this deep change are the Twelve Labors imposed on Heracles by Eurystheus.

Heracles knew that he had to return the hind, as he had promised, to Artemis, so he agreed to hand it over on the condition that Eurystheus himself come out and take it from him.

Heracles rerouted two nearby rivers (Alpheis and Peneios) through the stable, clearing out the dung rapidly.

Enraged, Augeias banished both Phyleus and Heracles from the land before the court had cast their vote.

[16] When Heracles brought back the man-eating Mares of Diomedes successfully, Eurystheus dedicated the horses to Hera and allowed them to roam freely in the Argolid.

[19] To extend what may have once been ten Labours to the canonical dozen, it was said that Eurystheus didn't count the Hydra, as he was assisted, nor the Augean stables, as Heracles received payment for his work.

When he managed to bring the struggling animal back, the terrified Eurystheus hid in his jar one more time, begging Heracles to leave for good and take the dog with him.

Macaria, one of the daughters of Heracles, and her brothers and sisters hid from Eurystheus in Athens, which was ruled by King Demophon.

As Eurystheus prepared to attack, an oracle told Demophon that he would win if and only if a noble woman was sacrificed to Persephone.