Gerousia

The Gerousia (γερουσία) was the Spartan council of elders, which was made up of men over the age of sixty. It was created by the Spartan lawgiver Lycurgus in the seventh century BC, in his Great Rhetra ("Great Pronouncement"). According to Lycurgus' biographer Plutarch, the creation of the Gerousia was the first significant constitutional innovation instituted by Lycurgus.