LEONIDAS  ,

king of Sparta, the seventeenth of the Agiad line . He succeeded, probably in 489 or 488 B.C., his half-brother Cleomenes, whose daughter Gorgo he married . In 48o he was sent with about 7000 men to hold the pass of Thermopylae against the army of Xerxes . The smallness of the force was, according to a current story, due to the fact that he was deliberately going to his doom, an oracle having foretold that Sparta could be saved only by the death of one of its kings: in reality it seems rather that the ephors supported the scheme half-heartedly, their policy being to concentrate the Greek forces at the Isthmus . Leonidas repulsed the frontal attacks of the Persians, but when the Malian Ephialtes led the Persian general Hydarnes by a mountain track to the rear of the Greeks he divided his army, himself remaining in the pass with 300 Spartiates, 700 Thespians and 400 Thebans . Perhaps he hoped to surround Hydarnes' force: if so, the movement failed, and the little Greek army, attacked from both sides, was cut down to a man save the Thebans, who are said to have surrendered . Leonidas fell in the thickest of the fight; his head was afterwards cut off by Xerxes' order and his body crucified .