Henry VI’s charter for S. Maria Assunta in Asola (MN), dated 1192 July 27, has long been suspected to be a forgery but never underwent critical diplomatic analysis. This essay aims to finally settle the question. The charter most likely was forged in order to serve as a piece of evidence in a litigation between the archpriest of Asola, Giovanni Battista Tosio, and the bishop of Brescia in 1676. It led to the desired success, and was later used as an important argument when Asola managed to be established as an exempt abbey in 1697. Furthermore, most probably it induced the early modern historian of Asola, Lodovico Mangini (1664-1723), to forge fragments of imperial diplomas to heighten his historiographical work.
Emperor Henry VI (1165-1197) – Diplomatic – Forgery – Asola – Lodovico Mangini