After this had taken place King Louis once more led a force against the Wends. When the heathen had learned this they sent ambassadors, as well as gifts and hostages, to Saxony, and asked for peace. Louis then granted peace and returned home from Saxony. Thereafter the robbers were afflicted by a terrible pestilence, during which the chief sinner among them, by the name of Reginheri, who had plundered the Christians and the holy places, was struck down by the hand of God. They then took counsel and threw lots to determine from which of their gods they should seek safety; but the lots did not fall out happily, and on the advice of one of their Christian prisoners that they should cast their lot before the God of the Christians, they did so, and the lot fell happily. Then their king, by the name of Rorik, together with all the heathen people, refrained from meat and drink for fourteen days, when the plague ceased, and they sent back all their Christian prisoners to their country. [Sidenote: The Northmen again in Frisia] =846.= According to their custom, the Northmen plundered eastern and western Frisia and burned the town of Dordrecht, with two other villages, before the eyes of Lothair, who was then in the castle of Nimwegen, but could not punish the crime. The Northmen, with their boats filled with immense booty, including both men and goods, returned to their own country. In the same year Louis sent an expedition from Saxony against the Wends across the Elbe. He personally, however, went with his army against the Bohemians, whom we call Beuwinitha, but with great risk.... Charles advanced against the Britons, but accomplished nothing. [Sidenote: Rome attacked by the Saracens] At this same time, as no one can mention or hear without great sadness, the mother of all churches, the basilica of the apostle Peter, was taken and plundered by the Moors, or Saracens, who had already occupied the region of Beneventum.[213] The Saracens, moreover, slaughtered all the Christians whom they found outside the walls of Rome, either within or without this church. They also carried men and women away prisoners. They tore down, among many others, the altar of the blessed Peter, and their crimes from day to day bring sorrow to Christians. Pope Sergius departed life this year. =847.= After the death of Sergius no mention of the apostolic see has come in any way to our ears. Rabanus [Maurus], master and abbot of Fulda,[214] was solemnly chosen archbishop as the successor of Bishop Otger, who had died. Moreover, the Northmen here and there plundered the Christians and engaged in a battle with the counts Sigir and Liuthar. They continued up the Rhine as far as Dordrecht, and nine miles farther to Meginhard, when they turned back, having taken their booty. [Sidenote: An outbreak of heresy repressed]