The modern village of Marsiliana d’Albegna is in the municipality of Manciano, in the province of Grosseto. It occupies the south-eastern branch of the floodplain of the Albegna river, where the valley leaves the plains and winds into the hills. Its strategic position, overlooking one of the most important waterways of the region, and thus controlling trade and communication, together with fertile soils have favoured, since ancient times, the founding and development of numerous settlements visible in its archaeology. The oldest evidence comes from the Castle Hill, a hillock which, although modest in height, is very noticeable from the plain, being the most prominent feature in the area. The Princes of the Corsini family have had a residence, the castle, atop this hill since 1761.
In 1908, during construction work on a building to store agricultural machinery, not far from the present centre of Marsiliana, in the area called Banditella, an extensive necropolis was discovered.