After a short time a tyrant arose at Megalopolis
in the person of Aristodemus, a Phigalian by birth and a son of Artylas, who had been adopted by Tritaeus, an influential citizen of Megalopolis
. This Aristodemus, in spite of his being a tyrant, nevertheless won the surname of “the Good.” During his tyranny the territory of Megalopolis
was invaded by the Lacedaemonians under Acrotatus, the eldest of the sons of King Cleomenes, whose lineage I have already traced with that of all the other Spartan kings.1
A fierce battle took place, and after many had fallen on both sides the army of Megalopolis
had the better of the encounter. Among the Spartan killed was Acrotatus, who never succeeded to the throne of his fathers.