Pelagius References Pelagius Christian cardinal and crusader Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Crusades/ The Fifth Crusade…arrived under the legate Cardinal-Legate Pelagius. Since Pelagius maintained that the Crusaders were under the jurisdiction of the church, he declined to accept the leadership of John of Brienne and often interfered in military decisions. Read More…arrived under the legate Cardinal-Legate Pelagius. Since Pelagius maintained that the Crusaders were under the jurisdiction of the church, he declined to accept the leadership of John of Brienne and often interfered in military decisions. Read More