The coat of arms of Monforte de Lemos was approved after the mandatory report of the Heraldic Council of Galicia, the autonomous government, under Decree 166/2002 of April 25, 2002.

The process sparked some initial controversy by contemplating the withdrawal of the Tau of Gules, a heraldic device associated, among others, to the Order of St. Anthony and St. Anton.

It was traditionally used as an emblem of the town, finally being emblazoned, in response to this feature together with its historical strength and its relationship with the House of Lemos, as follows: Of Silver, a mountain of gold, added to the tower of the same, accompanied in the center of the head of a Tau of Gules and six azure bezants, on the flanks.

At the ring, royal crown closedThe area around the town has been inhabited since long before the Roman occupation, as testified by excavations of sites dating to the Bronze Age.

It is believed that during pre-history, Monforte, now a valley, was a large lagoon, and evidence of this is found in the hard red clay by digging a few feet into the floor of the city.

In the Swabian era, the lands of Lemos belonged largely to the Condado Pallarense (related to the place of Pallares in the civil parish of Baamorto).

In 1883 the town was reached by a railroad, which helped Monforte to take place as a trade and communication center, due to its position as Galicia's entrance by train.

In the next decades the rail station was partially dismantled, the communication center was moved to the city of Ourense, the train factories were removed, causing a period of economic depression.