Saint Leonard of Port Maurice, O.F.M., (Italian: San Leonardo da Porto Maurizio) († 1751) was an Italian Franciscan preacher and ascetic writer called "the great missionary of the 18th century". Pope Pius VI pronounced his beatification on 19 June 1796, and Pope Pius IX his canonization on 29 June 1867. St. Leonard's Church in Boston, founded in 1873, is the first Roman Catholic Church in New England built by Italian immigrants. His Feast is celebrated on November 27.