Page "Eurysthenes" Paragraph 5

Pausanias states that the end of the First Messenian War was the first year of the 14th Olympiad.

The date must have been 724 / 723 BC if the first year of the first Olympiad was 776 / 775 BC.

Kings Polydorus of the Agiads and Theopompus of the Eurypontids were reigning at that time, roughly in mid-reign.

The end of the war must be 379 years from the return of the Heraclids.

According to Isaac Newton, also a classical scholar, the ten kings reigned an average of 38 years each, which can be used as an estimator of the dates.

Eurysthenes would have ruled in 1104 – 1066 BC, with an unknown margin of error, as much of the data is relatively uncertain.