Demaratus

Eurypontid king of Sparta from c.515 to 491 BC

Demaratus was a king of Sparta from around 515 BC to 491 BC. He was the 15th ruler of the Eurypontid dynasty and the firstborn son of King Ariston. During his reign, Demaratus is best known for his opposition to his co-ruler, King Cleomenes I of the Agiad dynasty. This rivalry ultimately led to his dethronement around 491 BC, following Cleomenes' accusations of illegitimacy and political maneuvering.

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