The town was founded as a fief of the San Salvatore Abbey of the Monte Amiata, which sold it to the Aldobrandeschi family, who are known to hold it in 973. After the death of Omberto Aldobrandeschi, it was acquired by the Republic of Siena. Later it was contended by the Visconti of Campiglia d'Orcia and the Tolomei of Siena.