The text of the Vita Ansgarii, also known as the 'Life of St. Ansgar', is the hagiography work relating to his life and missionary travels, written by Rimbert of Hamburg, his disciple and successor, who assumed the chair of the archbishopic in the German city of Bremen. His biography is an important source, not only in detailing Ansgar's Scandinavian missionary work to the Swedish and Danish tribes, but also in its descriptions of the everyday denizens of the region during the height of the Viking Age.