Eberhard, duke and margrave of Rhaetia and Friuli, arranged the contents of the edict with its successive additamenta into a Concordia de singulis causis (829-832).
According to the report of a monk from Reichenau Abbey the founder was believed to be Count Hunfried of Chur-Rhaetia, who was said to have promised Charlemagne to make the foundation for the worthy safekeeping of a precious reliquary cross containing a fragments of the True Cross, as well as an onyx vessel containing some of the Blood of Christ.
His will is one of the earliest surviving records from Graubünden and is an important source for the history of Rhaetia in the eighth century.