Register of ownership compiled in 1394, at the behest of Abbess
Luzia I, by the notary Jakob von Schluderns; a fair copy was
written on parchment by his son Peter. The register records 517
leaseholds in 36 localities. The ornamentation is simple, but
beautifully executed. Important are two large figures in color,
representing John the Baptist as patron and Charlemagne as founder
of the monastery. Valuable from the point of view of historical
linguistics is a passage in the vernacular that is copied in the
urbarium as part of a Latin document from 1389. This is the oldest
testimony of the Romansh language of the Engadine, or rather of the
Val Müstair.