Archaeological findings, although limited, demonstrate the Roman presence in the town and its surroundings: coins, a cameo, a stele of limestone and a brake horse dated in the 2nd century. It is necessary to add pieces reused by the Visigoths, and remains of columns, plates and statues of Carrara marble. There wasn’t a Roman settlement in Guadamur in particular, but it seems secure the existence of a Roman road of the second order and the likely existence of a villa in the area of the old road to Toledo. The local name Portusa, a ford of the Tagus to 8 km northwest of Guadamur, points to the area as a place of transit.