Gregory VIII (died 1137), born Mauritius Burdinus (Maurice Bourdin), was antipope from 10 March 1118 until 22 April 1121.
He was born in the Limousin, part of Occitania, France. He was educated at Cluny, at Limoges, and in Castile, where he was a deacon at Toledo. In 1098/1099 his Cluniac connections recommended him as Bishop of Coimbra. After a four year pilgrimage to the Holy Land, he was made Archbishop of Braga in 1111. There he was one of the principal agents of the Burgundian Henry, Count of Portugal, in his reorganization of the Portuguese church.
Portugal was then a fief of León, and the ambitious Count Henry pursued a vigorous program of ecclesiastical and political autonomy. By 1114, Mauritius had become embroiled in a dispute with the Spanish primate and papal legate in Castile, Bernard of Toledo, to the extent that he was called to Rome and suspended by Pope Paschal II (1099–1118). Nevertheless, he found favor at the papal court, and in 1116, when Emperor Henry V (1105–25) invaded Italy during the ongoing confrontations over the Emperor's rights of investiture of clerics, Paschal II sent Mauritius on an embassy to him, while the Pope and the Curia fled south to Benevento. Mauritius defected to the Emperor's side. Henry V went to Rome, and on Easter Sunday, March 23, 1117, was crowned Holy Roman Emperor by Mauritius. Paschal II deposed and excommunicated Henry V and removed Mauritius from office.
Pope Gregory VIII (Latin: Gregorius VIII; c. 1100/1105 – 17 December 1187), born Alberto di Morra, reigned from 21 October to his death in 1187.
Alberto di Morra was born about 1105 in Benevento, Italy. His father was the nobleman Sartorius di Morra. He became a monk early in life, either as a Cistercian in Laon, or a Benedictine at Monte Cassino. Alberto later joined a new religious order, the Premonstratensian or Norbertine order, probably between the ages of 20-30. He was a canon at St. Martin's Abbey in Laon. He later became a professor of canon law in Bologna.
In 1156, Pope Adrian IV made him cardinal-deacon of Sant'Adriano, and on 14 March 1158 he became cardinal-priest of San Lorenzo in Lucina. As a papal legate of Pope Alexander III, he was sent to teach canon law throughout Europe in the 1160s, and was sent to Portugal to crown Afonso II. He also brought an offer of reconciliation in 1163 to Holy Roman Emperor Frederick I Barbarossa, whom Pope Alexander III had excommunicated in 1160. Alexander also sent him to England to investigate the murder of Thomas Becket, and he absolved King Henry II of England of the murder during the Council of Avranches. From 1177-1179, Alberto also served as a legate in Italy and in February 1178 was named Chancellor of the Holy Roman Church. It was in this position that he "...compiled a Forma Dicendi, a collection of official papal acts, and also completed a codification of the cursus, a compilation of the very stringent rules governing the euphonious arrangements of sentence endings and phrasing in papal acts. In his honor, the cursus was called stylus gregorianus." These two documents were very influential in shaping the rhetoric used in papal documents. Shortly before his election to the papacy, Alberto founded a monastery in his hometown of Benevento.