 Both the subject matter and the sources employed by the forged capitularies show that they were composed in the western part of the Frankish empire, in the archiepiscopal province of Reims, and not at Mainz.It has long been noted, for example, that several of the forged "capitula" attack the chorepiscopate, and ninth-century opposition to chorbishops was particularly strong in the western Carolingian empire.Benedict’s collection was also first used by bishops in the Reims province, and recent work by Klaus Zechiel-Eckes has shown that its compiler likely used the monastic library available at Corbie (in the diocese of Amiens) to compile at least some of the forged laws.