Leonidas I

King of Sparta from c. 489 BC to 480 BC

Leonidas I (Ancient Greek: Λεωνίδας, Leōnídas; born c. 540 BC; died 11 August 480 BC) was Greek king of the Ancient Greek city-state of Sparta. He was the son of king Anaxandridas II and the 17th king of the Agiad dynasty, a Spartan royal house which claimed descent from Heracles. Leonidas I ascended to the throne in c. 489 BC, succeeding his half-brother king Cleomenes I. He ruled jointly along with king Leotychidas II until his death in 480 BC, when he was succeeded by his son, Pleistarchus.

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