The Italian Catholic diocese of Guastalla existed in the province of Reggio Emilia, from 1828 to 1986. It was then combined into the diocese of Reggio Emilia-Guastalla.
Guastalla formed part of the diocese of Reggio until 1471, when it became an archipresbyterate nullius. Pope Sixtus V (1583) gave it abbatial rank; it was only in 1828 that Leo XII, at the wish of Marie Louise, made it a bishopric, suffragan to the archdiocese of Modena.
Its first bishop was John Neuschel, a Hungarian abbot, and chaplain to the duchess. Among his successors were Monsignor Pietro Rota (1855-71), afterwards translated to Mantua.
- Cappelletti, Le chiese d' Italia (1858), XIV, 425-40
- ^ Catholic Hierarchy page
This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). Catholic Encyclopedia. Robert Appleton Company.