The Rohrau lute manuscripts had been discovered in the year 2004 in Schloss Rohrau in Austria. Michael Freimuth and Tim Crawford tell more about the finding and the content under The Harrach Manuscripts. These two large lute books include many singular fascicles that have been bound together. They probably stem from the area around Salzburg. Although the music might partially be from before 1720, the copies possibly are written not before 1735.
There are 33 pieces by Weiss, 13 unique und 20 concordant, selected 1 :
Page = 22r
|A-ROII/22r||Sarabande in D||WeissSW 63.5; cf. App 21|
|F-PnII/16r ("Johann Sigismund Weiss")|