Adam of Bremen was called to Bremen in 1066, where he led the convent school. Around 1075, he wrote his main work - the History of the Archbishops of Hamburg-Bremen. It is one of the most fascinating chronicles of the early medieval history and contains historical, geographical and ethnological descriptions. Adam drew from many sources, such as biographies, reports of miracles, and other documents. From this he created a chronicle, which had the purpose of substantiating the claim of the Archdiocese of Hamburg-Bremen to lead the entire north. This again included the fictional story of the early establishment of the archdiocese in Ansgar's time. It also suggested that the Pope and the Scandinavian kings' desire to sidestep Hamburg influence and establish a diocese in Scandinavia should be resisted. In the end, those fears became reality when the archdiocese of Lund was re-established in 1104.