fief. From that period forward, Miranda became progressively one of the most important towns that skirted the Trás-os-Montes region.

The Castilians occupied Miranda do Douro during the late 14th century, and would remain there until they were expelled by John I of Portugal. On 10 July 1545, King John III elevated Miranda do Douro to the status of city, at the same time becoming the first diocese