as far as Sicily. Ralph de Diceto had a chaplain on the expedition. Ralph of Coggeshall names his informants. William of Newburgh, was well-informed, but may have used the "Latin Continuation." Only of Rigord provides the French perspective. German chroniclers recorded the journey of Emperor Frederick I until his death including the supposedly by Ansbert. A monk from the Norwegian monastery of Tønsberg records the voyage of a Danish- Norwegian fleet in . describes the foundation of the German hospital at Acre that became the Teutonic Order. 13th–15th-century sources Geoffrey of Villehardouin’s is an authoritative, detailed and firsthand "top-down" account of the Fourth Crusade (1202–1204) and Frankish Greece. Robert of Clari’s similarly titled work adds a counterpoint from the lower orders but it is partial and unreliable while being occasionally a useful correction. These two works are complemented by the anonymous probably Rhineland illustrating the disillusionment of poorer crusaders. The triumphal return of crusaders and their loot is covered in three sources: Gunther of Pairis’s apologia for his patron Abbot Martin. The Anonymous of Halberstadt’s defence of his bishop Conrad of Krosigk. The Anonymous of Soissons’s account of relics brought to his church is an uncritical biography of the pope. Accounts of the Latin settlement in the Empire of Constantinople and Frankish Greece are limited. Villehardouin’s account was continued by Henry of Valenciennes. The Chronicle of the Morea is the key source for Frankish central and southern Greece in the 13th and the 14thfourteenth centuries and evidence legal systems. Three works document the Albigensian Crusade, from 1209 until 1219, against the Cathars of southern France: Peter of Vaux-de-Cernay, nephew of the bishop of Carcassonne, witnessed many of the events he details in . The work presents the view of the crusaders and effectively ends on the death of Simon de Montfort, 5th Earl of Leicester Song of the Albigensian Crusade or from 1218 and written in vernacular French by William of Tudela who supported the papacy and an anonymous writer was wholeheartedly did not. It is an entertainment but matches Peter’s work when describing the same events except in that Simon of Montfort is depivted as a villain. The Chronica of Guillaume de Puylaurens, a southerner and notary for the Inquisition includes brief coverage while covering the period between 1146 and 1272. The largely poor and uneducated participants in popular expeditions such as the 1212 Children’s Crusade and the 1251