He nevertheless became bishop about 767, had the first cathedral erected in 774 and began the valuable book Liber Confraternitatum (Confraternity Book of St. Peter).
Ta sai sellegipoolest 767. aasta paiku piiskopiks, püstitas aastal 774 esimese toomkiriku ja alustas väärtuslikku raamatut Liber Confraternitatum (Püha Peetruse vennaskonna raamat).