By testamentary bequest, Bishop Piervisani founded the Biblioteca Piervisani, located in the episcopal palace, for the use of the bishop, Canons, seminarians and general public. Statistica del Regno d'Italia biblioteche (in Italian). Vol. Anno 1863. Firenze: Le Monnier. 1865. p. LXXXVIII.
Bishop Liutardus was present at the Roman synod of Pope Eugene II in 826. J. D. Mansi (ed.), Sacrorum Conciliorum nova et amplissima collectio, editio novissima, Tomus XIV (Venice: A. Zatta 1769), p. 999. Gams, p. 709.