 The municipal statutes date right back to the 13th century.The democratically administered Republic of Siena allowed several municipalities, including Sovicille, their own municipal statutes in 1238 (modified in 1293 and then reconfigured, to the format that survives today, in 1303), which included the right to make their own laws.In 1260 Sovicille was occupied by Florence, but in that year the Florentine armies were defeated at the Battle of Montaperti, whereupon Sovicille reverted to Siena.