Pope Gregory VIII (; c. 1100/1105 – 17 December 1187), born Alberto di Morra, was head of the Catholic Church and ruler of the Papal States for two months in 1187. Becoming Pope after a long diplomatic career as Apostolic Chancellor, he was notable in his brief reign for reconciling the Papacy with the estranged Holy Roman Empire and for initiating the Third Crusade. Early life Alberto di Morra was born about 1105 in Benevento. 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. Cardinal 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 I. 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 to 1179, Alberto also served as a legate in Italy and in February 1178 was named Chancellor of the Holy Roman Church. As Chancellor he generally pursued a conciliatory line toward the Emperor; in the controversy over the disputed succession of the Archbishop of Trier he argued strongly in favor of setting aside both the pro-papal candidate Folmar of Karden and the pro-imperial Rudolf of Wied, and allowing the canons of Trier to hold a new election, but was overruled by Pope Urban III. It was in this position that di Morra "...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.