Italian antiquary and historian, horn in Vignola, Modena; became librarian in Milan 1695, and of the D'Este library, Modena, in 1700, in which city he died; he edited the Italian chronicles of the 5th-16th centuries, with many essays and dissertations, and many other historical and antiquarian works; but his name is chiefly associated with the "Muratorian Fragment," which dates from the 2nd century, and contains a list of the then canonical scriptures, and which he published 1840 (1672-1750).