The earliest documents attesting to the existence of the church date to the early 11th century, although it is possible that an earlier structure existed before that time. Its dedication to
Saint Martin of Tours, a 4th-century bishop, has led some scholars to suggest that the church may have been founded during the
Lombard or
Carolingian period. An ancient note preserved in a manuscript held in the archive of the
Magnifica Comunità di Este records the phrase
"a Longobardis Ecclesia divi Martini constructa fuit", meaning "the church of Saint Martin was built by the Lombards". A plaque embedded in the northern wall of the bell tower states that the
bell tower and the
apse, the oldest surviving structures of the present building, were rebuilt in 1293. Over the centuries, the church underwent several modifications without substantially altering its medieval layout. In particular, the apse was enlarged between the late 13th and early 14th centuries by incorporating an adjacent chapel dedicated to Saint Lawrence. In the 17th century, the façade was moved westward, lengthening the nave by about four metres; the bell tower was incorporated into the structure, and the interior was divided into three naves. Until 1771, the Church of San Martino served as a
parish church. From 1 June of that year, the parish seat was transferred to the nearby Basilica of Santa Maria delle Grazie. == Description ==