All bishoprics, abbeys and priories were in the royal nomination, the canonical institution belonging to the pope.
He had accumulated an immense private fortune, possessing in addition to his see the revenues of seven abbeys.
The following are a few of the most famous abbeys.
The abbeys of St Crepinle-Petit, and St Crepin-le-Grand, in or near Soissons, commemorated the places sanctified by their imprisonment and burial.
This Hatto built the church of St George on the island of Reichenau, was generous to the see of Mainz and to the abbeys of Fulda and Reichenau, and was a patron of the chronicler Regino, abbot of Priim.