An Irish bishop from Lucca, Italy, named Fridianus or Frediano, built a church on this spot in honor of St. Vincent as part of his missionary efforts in the 6th century. When he died, it became the San Frediano Church in his honor. The current Romanesque basilica made from white limestone was built around 1147. Additions occurred in the 16th century and it was renovated in the mid-19th century.
