​MONTMORILLON, a town of western France, capital of an arrondissement in the department of Vienne, on the Gartempe, 34 m. E.S.E. of Poitiers by rail. Pop. (1906), 3924. The ecclesiastical seminary occupies a building of the 12th century, formerly an Augustinian convent. The convent church is Romanesque in style and there is a curious two-storied chapel of octagonal form, of the same period. The church of Notre-Dame is a combination of Romanesque and Gothic, dating from the 12th and 13th centuries.