 During the 12th century, Civitella Paganico was owned by the Ardengheschi family.Beginning in 1254, the family began to reduce their holdings as the land came under the control of the Republic of Siena, selling the last of it to Sienese families in 1371.Following the fall of the Republic in 1555, much of the land was annexed by the Grand Duchy of Tuscany.