http://agathe.gr/democracy/the_ten_new_tribes.html
The Ten New Tribes Kleisthenes instituted a crucial reform, the reorganization of the citizenry into new administrative units called phylai (tribes). In his attempt to break up the aristocratic power structure, ... The Eponymous Heroes were Hippothoon, Antiochos, Aias, Leos, Erechtheus, Aigeus, Oineus, Akamas, Kekrops, and Pandion. ... Thus, a member of the tribe of Leontis would find relevant notices beneath the statue of Leos: lists for military conscription, public honors, upcoming court appearances, and the like.