Pope Urban III
A large chestnut tree near the site gave name to two parish churches, the one on higher ground next to Castel Maggiore, and this one as Minore. The church is dedicated to the Bishop Martin of Tours. A church on the site might have been present by the 10th century, and is documented by the late 12th century, through a bull of Pope Urban III in 1187. The present church was built in the 1500s.