The Kornelimünster Abbey was founded in 814 on the Inde River by Benedict of Aniane (750–821), at the suggestion of Louis the Pious, son and successor of Charlemagne. The cloister was originally called Redeemer Cloister on the Inde (Erlöserkloster an der Inde). In the middle of the 9th century, the cloister was given imperial immediacy and subsequently came into possession of a large swath of area surrounding the church. In 875, certain reliquaries were exchanged for one belonging to the martyr saint, Pope Cornelius (who died in 253). The cloister thereafter became known as Sancti Cornelii ad Indam (St Cornelius on the Inde), and then Kornelimünster. Today, the official title of the abbey is the Abbey of St Benedict of Aniane and Pope Cornelius.