List of abbots of Monte Cassino

This is a list of abbots of Monte Cassino.

Italian names are given in italics in parentheses for abbots before the third destruction of the abbey.

6th century

 * Benedict of Nursia (Benedetta da Norcia) : from 525/529
 * Constantine (Costantino) : 547–560?
 * Simplicius (Simplicio) : 560?–576?
 * Vitalis (Vitale) : 576?–580?
 * Bonitus (Bonito) : 580?–584

Between c. 580 and c. 585, the abbey was pillaged and burned by the Lombards and abandoned by its monks.

8th century

 * Petronax (Petronace) : 717?–747
 * Optatus (Optato) : 747?	– 760
 * Ermeris (Ermeri) : 760–760
 * Gratian (Graziano) : 760–764
 * Tomichis (Tomichi) : 764–771
 * Poto (Potone) : 771–777
 * Theodemar (Teodemaro) : 777/778–796
 * Gisulf (Gisolfo or Gisulfo) : 796–817

9th century

 * Apollinaris (Apollinare) : 817–828
 * Deusdedit (Diodato) : 828–834
 * Hilderic (Ilderico) : 834–834
 * Autpert (Autperto) : 834–837
 * Bassacius (Bassacio) : 837–856
 * Bertharius (Bertario) : 856–883

In 883, the abbey was destroyed by the Aghlabids and the monks moved to Teano and later Capua.


 * Angelar I (Angelario) : 883–889
 * Ragembrand (Ragembrando) : 890–899
 * Leo (Leone or Leo) : 899–914

10th century

 * John I (Giovanni) : 914–934
 * Adelpert (Adelperto) : 934–943/944?
 * Baldwin (Baldovino) : 943/944?–946
 * Maielpot (Maielpoto) : 943/944?–948

With Aligern, the monks return to Monte Cassino.


 * Aligern (Aligerno) : 948–985
 * Manso (Mansone) : 986–996
 * John II (Giovanni) : 996–997
 * John III (Giovanni) : 997–1010

11th century

 * John IV (Giovanni IV) : 1010–1011
 * Atenulf (Atenolfo) : 1011–1022
 * Theobald (Teobaldo) : 1022–1035
 * Basil (Basilio) : 1036–1038
 * Richer I (Richerio) : 1038–1055
 * Peter I (Pietro) : 1055–1057
 * Frederick (Federico) : 1057–1058
 * Desiderius or Daufer (Desiderio or Dauferio) : 1058–1087
 * Oderisius I (Oderisio) : 1087–1105

12th century

 * Otto (Ottone) : 1105–1107
 * Bruno (Bruno) : 1107–1111
 * Gerard (Gerardo) : 1111–1123
 * Oderisius II (Oderisio) : 1123–1126
 * Nicholas I (Nicola) : 1126–1127
 * Seniorectus (Senioretto) : 1127–1137
 * Rainald I (Rainaldo) : 1137
 * Wibald (Guibaldo or Wibaldo) : 1137
 * Rainald II (Rainaldo II) : 1137–1166
 * Theodin I (Teodino) : 1166–1167
 * Giles or Aegidius (Egidio) : 1168
 * Peter (Pietro) : 1168–1171 (apostolic administrator)
 * Dominic (Domenico) : 1171–1174
 * Peter II (Pietro II) : 1174–1186
 * Roffred (Roffredo dell'Isola) : 1188–1210

13th century

 * Peter III (Pietro III) : 1210–1211
 * Adenulf of Caserta (Adenolfo) : 1211–1215
 * Stephen I (Stefano) : 1215–1227
 * Landulf Sinibald (Landolfo Sinibaldo) : 1227–1236
 * Pandulf (Pandolfo) : 1237–1238 (apostolic administrator)
 * Stephen II (Stefano) : 1238–1248
 * Nicholas II (Nicola) : 1251 - ?
 * Richard (Riccardo) : 1252–1262
 * Theodin II (Teodino II) : 1262–1263
 * Bernard Ayglerius (Bernardo Aiglerio) : 1263–1282
 * Thomas I (Tommaso) : 1285–1288
 * Ponce (Ponzio) : 1292–1292
 * William (Guglielmo) : 1293–1294?
 * Angelar II (Angelario II) : 1294–1295
 * Berard (Beraudo) : 1295–1295
 * Bernard (Bernardo) : 1295–1296 (apostolic administrator)
 * Galard (Galardo) : 1296–1301

14th century

 * Thomas II (Tommaso II) : 1304–?
 * Marinus (Marino) : 1306–1313
 * Isnard de Pontevès (Isnardo) : ?–?
 * Oddone della Sala : 1323–1326 (apostolic administrator)

From Raymond on, the abbots are bishops.


 * Raymond de Gramat (Raimondo) : 1326–1340
 * Guy of San Germano (Guido di San Germano) : 1340–1341
 * Richer II de Miremont (Richerio) : 1341–1343
 * Étienne Aldebrand (Stefano) : 1343–1345/1346
 * William II de Rosières (Guglielmo) : 1345–1346–1353

In 1349, the abbey was destroyed by an earthquake.


 * Francesco degli Atti : 1353–1355
 * Angelo I Acciaioli : 1355–1357
 * Angelo II della Posta : 1357–1362
 * Angelo III Orsini : 1362–1365
 * Guglielmo III : 1366–1369

From Bartolomeo on, the abbots are once again monks (not bishops).


 * Bartolomeo da Siena : 1369–1369
 * Andrea I da Faenza : 1369–1373
 * Pietro IV de Tartaris : 1374–1395
 * Enrico Tomacelli : 1396–1413

15th century

 * Pirro Tomacelli : 1414–1442
 * Antonio Carafa : 1446–1454

From Ludovico on, the abbots are in commendam.


 * Ludovico Trevisan : 1454–1465
 * Pietro V Barbo : 1465–1471
 * Giovanni d'Aragona : 1471–1485
 * Giovanni de' Medici : 1486–1504

16th century
From Zaccaria on, the abbots are heads of the Cassinese congregation.


 * Zaccaria Castagnola : 1506–1509
 * Graziano II : 1509–1510
 * Ignazio Squarcialupi : 1510–1516
 * Vincenzo de Riso : 1517–1518
 * Teofilo Piacentini : 1519–1520
 * Ignazio Squarcialupi : 1520–1521 (second time)
 * Ludovico Trivulzio : 1522–1522
 * Giustino Harbes : 1522–1523
 * Ignazio Squarcialupi : 1524–1526 (third time)
 * Crisostomo de Alessandro : 1527–1531
 * Agostino Bonfili : 1531–1533
 * Crisostomo de Alessandro : 1533–1538 (second time)
 * Girolamo : 1538–1539
 * Ignazio II : 1539–1541
 * Girolamo II Scloccheto : 1541–1546
 * Lorenzo Zambelli : 1546–1549
 * Girolamo II Scloccheto : 1549–1551 (second time)
 * Innocenzo Nicolai : 1551–1554
 * Girolamo III Calcini : 1554–1555
 * Isidoro Mantegazzi : 1555–1556
 * Ignazio III Vicani : 1556–1559
 * Angelo IV de Faggis : 1559–1564
 * Ignazio III Vicani : 1564–1565 (second time)
 * Angelo IV de Faggis : 1565–1568 (second time)
 * Bernardo II de Adamo : 1568–1570
 * Mattia Mattaleia : 1570–1572
 * Angelo IV de Faggis : 1572–1575 (third time)
 * Girolamo IV Gersale : 1575–1577
 * Bernardo III Ferrajolo : 1577–1580
 * Desiderio II : 1580–1585
 * Bernardo III Ferrajolo : 1585–1587 (second time)
 * Egidio II Sernicoli : 1587–1589
 * Andrea II : 1589–1590
 * Girolamo V Brugia : 1590–1595
 * Basilio II : 1595–1596
 * Vittorino de Manso : 1597–1598
 * Zaccaria II Tarasco : 1598–1599
 * Ambrogio Rastellini : 1599–1602

17th century

 * Desiderio III : 1603–1604
 * Gregorio Casamata : 1605–1608
 * Paolo da Cosenza : 1608–1609
 * Onorato Scalisi : 1609–1614
 * Isidoro II Agresti : 1614–1617
 * Paolo II Scotti : 1617–1621
 * Bernardino Saivedra : 1621–1624
 * Simplicio II Caffarelli : 1625–1628
 * Paolo II Scotti : 1629–1630 (second time)
 * Angelo V Grassi : 1631–1631
 * Paolo Camillo Casati : 1632–1634
 * Desiderio IV Petronio : 1635–1639
 * Severino Fusco : 1640–1645
 * Andrea III Arcioni : 1645 - 1647
 * Desiderio IV Petronio : 1648–1649
 * Domenico II Quesada : 1650–1653
 * Carlo de Mauro : 1654–1657
 * Angelo VI della Noce : 1657–1661
 * Anastasio Perrone : 1661–1665
 * Angelo VI della Noce : 1665–1669 (second time)
 * Mauro Cesarini : 1669–1675
 * Severino II Pepe : 1675–1680
 * Andrea IV Deodati : 1680–1681
 * Sebastiano Biancardi : 1681–1687
 * Andrea IV Deodati : 1687–1692 (second time)
 * Severino II Pepe : 1692–1697 (second time)
 * Ippolito della Penna : 1697–1704

18th century

 * Gregorio II Galisio : 1704–1717
 * Nicola III Ruggi : 1717–1722
 * Arcangelo Brancaccio : ?–1725
 * Sebastiano II Gadaleta : 1725–1731
 * Stefano IV de Stefano : 1731–1737
 * Ildefonso del Verme : 1737–1739
 * Sebastiano II Gadaleta : 1739–1745 (second time)
 * Antonio II Capece : 1745–1751
 * Giovanni Maria Ragosa : 1751–1753
 * Marino II Migliarese : 1754–1760
 * Domenico III Favilla : 1760–1766
 * Aurelio Parisio : 1766–1772
 * Rinaldo Santomagno : 1772–1778
 * Domenico III Favilla : 1778–1780 (second time)
 * Prospero de Rosa : 1781–1787
 * Tommaso II Capomazza : 1788–1793
 * Prospero de Rosa : 1793–1797 (second time)
 * Marino III Lucarelli : 1797–1804

19th century

 * Aurelio II Visconti : 1804–1816
 * Giuseppe del Balzo : 1817–1821
 * Luigi Bovio : 1821–1828
 * Giacomo Diez : 1828–1834
 * Celestino Gonzaga : 1834–1840
 * Matteo Morso : 1840–1840
 * Giuseppe II Frisari : 1841–1849
 * Michelangelo Celesia : 1850–1858
 * Simplicio III Pappalettere : 1858–1863
 * Carlo II de Vera : 1863–1871
 * Nicola IV d'Orgemont : 1872–1896
 * Giuseppe III Quandel : 1896–1897
 * Bonifacio Maria Krug : 1897–1909

20th century

 * Gregorio IV Diamare : 1909–1945

In 1944, the abbey was destroyed a fourth time during the battle of Monte Cassino.


 * Ildefonso II Rea : 1945–1971
 * Martino Matronola : 1971–1983
 * Bernardo IV Fabio D'Onorio : 1983–2007

21st century

 * Pietro VI Vittorelli : 2007–2013
 * Donato Ogliari : 2014–2023
 * Antonio Luca Fallica: 2023–present.