| Bishops |
Bishop Pietro Dema | Consecrated Bishop: | 1952.04.20 | | Died: | 1955.01.28 |
| Titular Bishop of Apollonias (1952.01.27 – 1955.01.28) |
|
Bishop Ambrosi de Magistris |
 Bishop Simone de Magistris, C.O.
| Born: | 1728.02.28 (Italy) | | Ordained Priest: | 1762.12.18 | | Consecrated Bishop: | 1792.03.04 | | Died: | 1802.10.06 († 74) |
| Titular Bishop of Cyrene (1792.02.27 – 1802.10.06) |
|
 Bishop Jean de Mallevaud, O.F.M. Rec.
| Born: | 1608 | | Died: | 1682.05.04 († 74) |
| Titular Bishop of Aulon (1648.12.07 – 1682.05.04) Auxiliary Bishop of Clermont (France) (1648.12.07 – 1682.05.04) |
|
Bishop Gabriele Maria de Marchis (Italo-Albanese Rite) |
Bishop Nicolaus de Marchis (Italo-Albanese Rite) |
  Bishop Antônio Aparecido de Marcos Filho (56)
Titular Bishop of Centenaria
Auxiliary Bishop of Brasília (Brazil)
Populus tuus populus meus | Born: | 1966.08.05 (Ibaté, SC, Brazil) | | Ordained Priest: | 1999.09.10 | | Consecrated Bishop: | 2023.02.25 |
| Titular Bishop of Centenaria (2022.12.21 – ...) Auxiliary Bishop of Brasília (Brazil) (2022.12.21 – ...) |
|
Archbishop Domenico de’ Marini | Consecrated Bishop: | 1670.05.18 |
| Titular Archbishop of Theodosia (1669.12.02 – ?) |
|
Archbishop Raphael de Martinis, C.M. | Born: | 1828.05.02 (Italy) | | Consecrated Bishop: | 1896.07.05 | | Died: | 1900.02.15 († 71) |
| Titular Archbishop of Laodicea (1896.04.28 – 1900.02.15) |
|
Bishop Michael Angelus de Martino | Born: | 1682.10 (Italy) | | Ordained Priest: | 1706.12.18 | | Died: | († 48) |
| Titular Bishop of Arcadia (1728.09.20 – ?) |
|
 Bishop Ludwik Józef de Mathy
| Born: | 1727.02 | | Ordained Priest: | 1749.12.20 | | Consecrated Bishop: | 1780.05.07 | | Died: | 1801 († 74) |
| Titular Bishop of Tanis (1779.09.20 – 1801) Auxiliary Bishop of Poznań (Poland) (1779.09.20 – 1801) |
|
Bishop Francisco de Mayorga |
Bishop Vincenzo de Mazuelo, O.P. |
Bishop Bernardo Dembek | Born: | 1878.04.11 (Poland) | | Ordained Priest: | 1903.03.23 | | Consecrated Bishop: | 1930.10.12 | | Died: | 1937.06.27 († 59) |
| Titular Bishop of Troas (1930.07.25 – 1937.06.27) Auxiliary Bishop of Łomża (Poland) (1930.07.25 – 1937.06.27) |
|
Bishop Jan Dembowski | Born: | 1701.01.02 | | Consecrated Bishop: | 1760.02.02 | | Died: | 1790 († 89) |
| Auxiliary Bishop of Kujawy–Pomorze (Poland) (1759.09.24 – 1788.07.14) Titular Bishop of Lambaisis (1759.09.24 – 1790) |
|
Bishop Paweł Dembski | Born: | 1540? | | Died: | 1614.02.28 († 74) |
| Titular Bishop of Laodicea (1587.03.11 – 1614.02.28) Auxiliary Bishop of Kraków (Poland) (1587.03.11 – 1614.02.28) |
|
Bishop Pedro de Medina, O.F.M. |
 Archbishop Luis Antonio de Mena y Steinkoft
| Born: | 1873.07.29 | | Ordained Priest: | 1896.09.19 | | Consecrated Bishop: | 1922.09.25 | | Died: | 1942.05.07 († 68) |
| Coadjutor Archbishop of Santo Domingo (Dominican Republic) (1922.04.21 – 1932) Titular Archbishop of Parium (1922.04.21 – 1942.05.07) |
|
 Bishop Rafael de Mercatel
| Born: | 1437 | | Died: | 1508 († 71) |
| Titular Bishop of Rosen (1487 – 1508) Auxiliary Bishop of Tournai (Belgium) (1487 – 1508) |
|
Bishop Egidio de Merica, O. Carm. |
 Bishop Bartolomé de Mesones, O.F.M.
| Titular Bishop of Raphaneæ (1697.07.01 – 1710) Auxiliary Bishop of Burgos (Spain) (1697.07.01 – 1710) |
|
 Bishop Antoon Demets, C.SS.R.
| Born: | 1905.04.19 (Belgium) | | Ordained Priest: | 1931.09.21 | | Consecrated Bishop: | 1946.08.24 | | Died: | 2000.08.03 († 95) |
| Coadjutor Bishop of Roseau (Dominica) (1946.06.13 – 1954.10.30) Titular Bishop of Cadossia (1946.06.13 – 2000.08.03) |
|
Bishop Pedro de Mirabal Ayllón |
 Bishop Alfons Demming
Freut euch, wir sind gottes volk | Born: | 1928.02.29 (Germany) | | Ordained Priest: | 1953.12.21 | | Consecrated Bishop: | 1977.01.09 | | Died: | 2012.10.31 († 84) |
| Auxiliary Bishop of Münster (Germany) (1976.11.06 – 1998.04.30) Titular Bishop of Gordus (1976.11.06 – 2012.10.31) |
|
Archbishop Bernardino de Monachelli, O.F.M. Titular Archbishop of Carthage (1519.05.13 – ?) |
Bishop Jean de Montmartin, O.F.M. | Consecrated Bishop: | 1435.01.16 | | Died: | 1436? |
| Titular Bishop of Rhosus (1434.09.01 – 1436?) |
|
Bishop Guy de Montmiral, O.S.B. | Titular Bishop of Megara (1526.04.27 – 1539) |
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Bishop Elizeu de Morais Pimentel Misertus est super eos | Born: | 1952.11.10 (Brazil) | | Ordained Priest: | 1982.07.10 | | Consecrated Bishop: | 2002.03.16 | | Died: | 2003.02.27 († 50) |
| Coadjutor Bishop of Paranavaí (Brazil) (2001.12.19 – 2003.02.27) |
|
Bishop Luis de Morales, O.E.S.A. | Titular Bishop of Troas (1661.09.05 – ?) Auxiliary Bishop of Toledo (Spain) (1661.09.05 – ?) |
|
Bishop Giovanni de Morellis de Bitonto, O.F.M. |
Archbishop Giovanni de Mozanega | Consecrated Bishop: | 1621.12.12 |
| Titular Archbishop of Scythopolis (1621.10.22 – ?) |
|
 Bishop Michael Ryan Patrick Dempsey
| Born: | 1918.09.10 (USA) | | Ordained Priest: | 1943.05.01 | | Consecrated Bishop: | 1968.06.13 | | Died: | 1974.01.08 († 55) |
| Titular Bishop of Tronto (1968.05.02 – 1974.01.08) Auxiliary Bishop of Chicago (USA) (1968.05.02 – 1974.01.08) |
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