The Chief Heresies

Heresy	Author	Error
Arian	Arius, a Priest	Denied the Divinity of Jesus Christ
Manichean	Manes	Taught there were two gods; one author of good, the other of evil.
Macedonian	Macedonius, Bishop of Constantinople	Denied the divinity of the Holy Ghost
Pelagian	Pelagius, British Monk	Denied Original Sin and the necessity of Grace.
Nestorian	Nestorius, Patriarch of Constantinople	Taught two persons in Christ and that the Blessed Virgin Mary was not the Mother of God.
Eutychian	Eutyches, an abbott.	Denied two natures of Jesus Christ.
Semi-Pelagian	New form of Pelagianism	Taught that grace is necessary to continue but not to begin good actions.
Monothelite	Sergius, Patriarch of Constantinople.	Taught only the divine will in Jesus Christ.
Iconoclast	Leo III, Isaurian, Emperor of Constantinople.	Aimed at the destruciton of Holy Images.
Greek Schism	Photius	Refused allegiance to the Holy See.
Berengarian	Berengarius, deacon of Angers.	Denied Real Presence in the Holy Eucharist.
Albigensian	Followers of Arnold of Brescia.	Denied incarnation, redemption, etc.
Waldensian	Peter Waldo.	Taught every sin was mortal; no indulgences; two sacraments.
Wickliffite	Wycliff in England, Husss in Germany	Taught predestination; private interpretation; revolutionary doctrine.