Isola del Giglio
At the moments of its creation it included part of today's province of Grosseto, up to the Isola del Giglio, and Castiglione d'Orcia, in what is now the province of Siena. In the 14th century the Republic of Siena was able to capture Isola del Giglio, Roccastrada, Istia d'Ombrone, Magliano in Toscana, Selvena, Arcidosso and Castiglione d'Orcia, reducing the county to its capital, Castell'Azzara, Semproniano and Scansano.