Rupert of Salzburg was a Frankish bishop born in Worms around 650. He is recognized as the first bishop of Salzburg, having founded the city at the site of Juvavum. A member of the Benedictine order, he served as an abbot and was instrumental in missionary work throughout the Danube region and Bavaria. His efforts in these areas earned him the title of apostle of the Bavarians, significantly shaping the early Christian landscape of the region.