In 864, Altfrid moved the relics of Saint Marsus from Auxerre to an unknown place in Saxony, most likely to Corvey Abbey.
At the peace of Lunéville in 1801, the part of the landgraviate on the left bank of the Rhine was surrendered to France and, in 1815, other parts were ceded to Prussia, the landgrave Victor Amadeus being compensated by the abbey of Corvey and the Silesian duchy of Ratibor.
Other important monastic scriptoria that flourished during the Ottonian age include those at Corvey, Hildesheim, Regensburg, Echternach, and Cologne.
On 22 October 1146, he was also elected Abbot of Corvey and four months later the convents at Fischbeck and Kemnade were annexed to Corvey Conrad III.