 In medieval times it was assigned to the Committee of Pombia; it then passed under the Counts of Biandrate in 1152, and from that period followed the fate of a larger neighboring municipality, Momo.In 1402 the Duke of Milan Gian Galeazzo Visconti handed over the village to the nobleBarbavara who then sold it to Cristoforo di Casate.Then, in 1534, Vaprio was sold for 16,800 lire(local money) to the lord of -
Fontaneto d'Agogna, Galeazzo Visconti, remaining under this family until the early nineteenth century.