 In 1139, Ranieri Pannocchieschi gave to the Bishop of Volterra, Adimaro Adimari, his property stretching to Lajatico and neighboring areas.In 1161, another part of Lajatico was given to the Bishop of Volterra, until Bishop Ildebrando Pannocchieschi, due to a Papal Bull of August 1186, took over the political jurisdiction.In 1202, Lajatico and part of Volterra came under the influence of Pisa until 1284, when Pisa was defeated by Genova in the Battle of Meloria.