Pope Gregory II
Gregorian chant is a variety of plainsong named after Pope Gregory I (6th century A.D.), although Gregory himself did not invent the chant. The tradition linking Gregory I to the development of the chant seems to rest on a possibly mistaken identification of a certain "Gregorius", probably Pope Gregory II, with his more famous predecessor. The term Gregorian Chant is often incorrectly used as a synonym of plainsong.