The Diocese of Guastalla was an Italian Latin Catholic suffragan bishopric in the province of Reggio Emilia, from 1828 to 1986.
Guastalla formed part of the diocese of Reggio until 1471, when the archipresbyterate nullius of Guastalla was territorially detached from the Roman Catholic Diocese of Reggio.
On 1585.11.05 Pope Sixtus V promoted it as Abbacy nullius of San Pietro Apostolo di Guastalla.
Only on 1828.09.13 Pope Leo XII, at the wish of Marie Louise, made it a bishopric, suffragan of the Metropolitan Archdiocese of Modena.
On 1986.09.30 it was suppressed, its territory and title merged into the thus renamed mother-Diocese of Reggio Emilia–Guastalla.
(Roman Rite)
Suffragan Bishops of Guastalla
Its first bishop was Giovanni Tommaso Neuschel (1828.09.30 – 1836.11.21), a Hungarian abbot, and chaplain to the duchess of Parma; previously Titular Bishop of Troas (1828 – 1828.09.30); later Bishop of Borgo San Donnino (Italy) (1836.11.21 – 1843.01.27), Bishop of Parma (Italy) (1843.01.27 – retired 1852.09.17), emeritate as Titular Archbishop of Theodosiopolis (1852.09.17 – death 1863.12.10)
Pietro Giovanni Zanardi (1836.11.21 – death 1854.09.15)
Pietro Rota (1855.03.23 – 1871.10.27); later Bishop of Mantova (Mantua) (Italy) (1871.10.27 – retired 1879.05.12), emeritate as Titular Archbishop of Cartagine (1879.05.12 – 1884.11.04), then Titular Archbishop of Thebæ (1884.11.04 – death 1890.02.03)
Francesco Benassi (1871.10.27 – retired 1884.11.10), previously Bishop of Borgo San Donnino (Italy) (1859.06.20 – 1871.10.27); emeritatate as Titular Bishop of Argos (1884.11.10 – 1892.03.15)
Prospero Curti (1884.11.10 – death 1890)
Andrea Carlo Ferrari (1890.05.29 – 1891.05.29), later Bishop of Como (Italy) (1891.05.29 – 1894.05.21), Metropolitan Archbishop of Milan(o) (Italy) (1894.05.21 – death 1921.02.02), created Cardinal-Priest of S. Anastasia (1894.05.21 – 1921.02.02)
Pietro Respighi (1891.12.14 – 1896.11.30), later Metropolitan Archbishop of Ferrara (Italy) (1896.11.30 – resigned 1900.04.19), created Cardinal-Priest of Ss. Quattro Coronati (1899.06.22 – death 1913.03.22), Vicar General for the Vicariate of Rome of Roma (Italy) (1900.04.09 – 1913.03.22), Camerlengo of Sacred College of Cardinals (1906.02.21 – 1907), Archpriest of Papal Archbasilica of St. John Lateran (1910.01.10 – 1913.03.22)
Enrico Grazioli (1896.11.30 – retired 1897.04.13), previously Titular Bishop of Samosata (1895.03.18 – 1896.11.30), later on emeritate Titular Archbishop of Nicopolis (1898.03.24 – death 1906.03.06)
Andrea Sarti (1897.04.19 – 1909.04.29), later Bishop of Pistoia (Italy) (1909.04.29 – 1915.11.07), Bishop of Prato (Italy) (1909.04.29 – death 1915.11.07)
Agostino Cattaneo (1910.03.15 – death 1923.04.09)
Giordano Corsini (1923.05.23 – 1932.07.07), previously Titular Bishop of Hebron (1922.03.07 – 1923.05.23) & Auxiliary Bishop of Verona (Italy) (1922.03.07 – 1923.05.23); emeritate as Titular Bishop of Arca in Armenia (1932.07.07 – 1933.04.14)
Giacomo Zaffrani (1932.09.16 – death 1960.05.06)
Angelo Zambarbieri (1960.05.06 – 1970.08.15), succeeded as former Coadjutor Bishop of Guastalla (1959.03.12 – 1960.05.06) & Titular Bishop of Sita (1959.03.12 – 1960.05.06)
Gilberto Baroni ((1970 – 1973.02.10 – 1986.09.30), previously Titular Bishop of Thagaste (1954.12.04 – 1963.05.30) & Auxiliary Bishop of Bologna (Italy) (1954.12.04 – 1963.05.30), Bishop of Albenga (Italy) (1963.05.30 – 1965.03.27), Bishop of Roman Catholic Diocese of Reggio Emilia&Reggio Emilia (Italy) (1965.03.27 – 1986.09.30); later first Bishop of successor see Reggio Emilia–Guastalla (Italy) (1986.09.30 – retired 1989.07.11)
