b. 740/41, d. Jan. 24, 821, from 785 bishop, from 798 (first) Archbishop of Salzburg and Metropolitan of Bavaria. As confidant of Charlemagne he accompanied him on diplomatic missions and set about converting the Carantanian Slavs and Avars. Had all the estates under the Archdiocese of Salzburg registered ("Notitia Arnonis" and "Breves Notitiae") and commissioned the "Salzburg Annals" ("Salzburger Annalen"); drew up a library of 150 manuscripts, extended the School of St. Peter and refurbished Salzburg Cathedral.
Literature#H. Dopsch, in: Geschichte Salzburgs, vol. 1, 21983.