In 49 B.C., Rovolon belonged to the Municipium Patavii. With the barbarian invasions, the area experienced an initial period of decline. In 569, the area of the Municipium Patavii was dismembered and divided by the king of the Lombards, Alboin, so the entire western part came under the jurisdiction of Vicenza, including Rovolon, which ecclesiastically belonged to the Patavian diocese. This is confirmed by a document from the year 970 in which the Bishop of Padua, Gauslino, made a significant donation to the large monastic complex of Santa Giustina, which had fallen into a state of severe neglect after the invasion of the Hungarians. The deed of donation mentioned, among other properties, the Church built in honor of St. George in the locality of the Vicenza area called Rebolone. The successors of Bishop Gauslino confirmed this donation, and the parish of Rovolon remained the property of the powerful abbot of Santa Giustina until the 18th century.
The church of St. George in Rovolon is documented in 1077; however, there is also the hypothesis that the parish was established between the 7th and 8th centuries, during the Lombard domination. Particularly striking are the apse frescoes dating back to the late 1400s.