Bishops of Roselle :
... • Vitalianus (attested 499) :
... • Balbinus (attested 591, 595) :
... • Theodorus (attested c. 650) :
... • Valerianus (attested 680) :
... • Gaudioso (attested 715) :
... • Rauperto (attested 826) :
... • Otto (attested 853, 861) :
... • Radaldus (attested 967) • Rainerius (attested 1015) :
... :[Otto] • Crescentius (attested 1036) • Gerardus (attested 1050−1060) • Dodo (attested 1060–1078) :[Baulfus] (Ballolfo) (circa 1090) • Ildebrandus (attested 1101–1108) • Berardus (attested 1118) • Rolandus (c. 1133–1138)
Bishops of Grosseto 1138 to 1500 •
Rolandus (1133–1138–1160?) • Martinus (attested 1174–1179) • Gualfredus (attested 1187–1189) • Azzo (1210) • Hermannus (1212–1216) • Pepus (Petrus ?) (1216–?) • Azio I (30 Apr 1240 – ?) • Ugo di Ugurgeri (attested 1262) • Azio II (1265–1277) •
Restauro (1306–1328) • Filippo Bencivenne (1328–1330) •
Angelo da Porta Sole (12 Feb 1330 – 22 Feb 1334) •
Angelo Cerretani (17 Jun 1334 – Feb 1349) •
Benedetto Cerretani (21 Oct 1349 – 1383) •
Giacomo Tolomei (1384 – 26 Jan 1390) •
Angelo Malavolti (14 Nov 1390 – ?) • Giovanni (1400) •
Antonio Malavolti (1400–1406) •
Francesco Bellanti (1407 – 6 Jul 1417) •
Giovanni Pecci (15 Dec 1417 – 1 Mar 1426 Died) :Cardinal
Giuliano Cesarini (1439–1444)
Administrator •
Memmo Agazzari (1445–1452) •
Giovanni Agazzari (1452 – 1468 or 1471 or 1488) •
Giovanni Pannocchieschi d'Elci (1471–1488 Died) •
Andreoccio Ghinucci (9 Mar 1489 – 1497 Died) •
Raffaello Petrucci (4 Aug 1497 – 11 Dec 1522 Died)
1500 to 1800 •
Ferdinando Ponzetti (Poncetti) (22 Dec 1522 – 25 Feb 1527 Resigned) •
Giulio Sansedoni (20 Nov 1606 – 1611 Resigned) •
Francesco Piccolomini (17 Aug 1611 – May 1622 Died) •
Girolamo Tantucci (11 Jul 1622 – 1636 Died) •
Giovanni Battista Gori Pannilini (1 Mar 1649 – 1662 Died) •
Giovanni Pellei (11 Feb – 8 Jul 1664) •
Giacomo Falconetti (15 Jan 1703 – Apr 1710) •
Bernardino Pecci (15 Dec 1710 – 1 Jun 1736) •
Antonio Maria Franci (6 May 1737 – 10 Apr 1790) •
Fabrizio Selvi (17 Jun 1793 – 9 Jun 1835 Resigned)
since 1837 •
Giovanni Domenico Mensini (1837–1858) :
Sede vacante (1858–1867) •
Anselmo Fauli (1867–1876) •
Giovanni Battista Bagalà Blasini (1876–1884) •
Bernardino Caldaioli (1884–1907) •
Ulisse Carlo Bascherini (1907–1920 Retired) •
Gustavo Matteoni (8 Mar 1920 – 3 Mar 1932 Appointed,
Coadjutor Archbishop of Siena) •
Paolo Galeazzi (16 Sep 1932 – 10 Aug 1971 Died) •
Primo Gasbarri (16 Oct 1971 – 22 Jan 1979 Resigned) •
Adelmo Tacconi (23 Mar 1979 – 20 Jul 1991 Retired) •
Angelo Scola (20 Jul 1991 – 14 Sep 1995 Resigned) •
Giacomo Babini (13 Jul 1996 – 17 Nov 2001 Resigned) •
Franco Agostinelli (17 Nov 2001 – 29 Sep 2012 Appointed,
Bishop of Prato) •
Rodolfo Cetoloni (28 May 2013 – 19 Jun 2021 Retired) •
Giovanni Roncari, OFMCap (19 Jun 2021 – 19 Dec 2024) •
Bernardino Giordano (since 19 December 2024) ==Parishes==