Eurypon in Wikipedia

Eurypon, otherwise called Eurytion (Ευρυπών, Ευρυτίων), grandson of Procles, was the third king of that house at Sparta, and thenceforward gave it the name of Eurypontidae. Plutarch talks of his having relaxed the kingly power, and played the demagogue; and Polyaenus relates a war with the Arcadians of Mantineia under his command.[1][2][3]

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