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).
(4) Those districts in which Christianity was extremely weak or where it was hardly found at all: the districts to the north and north-west of the Black Sea, the western section of upper Italy, middle and upper Gaul, Belgica, Germany, Rhaetia, the towns of ancient Philistia.
Augsburg (the Augusta Vindelicorum of the Romans) derives its name from the Roman emperor Augustus, who, on the conquest of Rhaetia by Drusus, established here a Roman colony about 14 B.C. In the 5th century it was sacked by the Huns, and afterwards came under the power of the Frankish kings.
The St Valentinus who is spoken of as the apostle of Rhaetia, and venerated in Passau as its first bishop, flourished in the 5th century.