| Bishops |
  Bishop Antoine Aoukar, O.A.M. (58) (Maronite Rite)
Titular Bishop of Ptolemais in Phœnicia of the Maronites
Bishop of Curia of the Maronites
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 Bishop Severo Aparicio Quispe, O. de M.
| Born: | 1923.10.08 (Peru) | | Ordained Priest: | 1951.09.22 | | Consecrated Bishop: | 1979.03.04 | | Died: | 2013.05.06 († 89) |
| Auxiliary Bishop of Cusco (Peru) (1978.12.11 – 1999.04.10) Titular Bishop of Vegesela in Numidia (1978.12.11 – 2013.05.06) |
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 Saint Bishop Apollonius
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Bishop Adrianus Appelkeren, O.E.S.A. Titular Bishop of Sebaste (1502.04.18 – ?) |
 Bishop Pasquale Appodia
| Born: | 1834.01.25 (Italy) | | Consecrated Bishop: | 1891.03.08 | | Died: | 1901.11.07 († 67) |
| Titular Bishop of Capitolias (1891.02.13 – 1901.11.07) Auxiliary Bishop of Jerusalem (Palestine) (1891.02.13 – 1901.11.07) |
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 Bishop Gheevarghese Aprem Kurisummottil (62) (Syro-Malabar Rite)
Titular Bishop of Chayal of the Syro-Malankars
Auxiliary Bishop of Kottayam of the Syro-Malabars (India)
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 Bishop Miguel Moises Araoz
| Born: | 1823.05.08 | | Ordained Priest: | 1846.10.06 | | Consecrated Bishop: | 1872.08.04 | | Died: | 1883 († 60) |
| Titular Bishop of Berisa (1871.10.27 – 1883) Auxiliary Bishop of Buenos Aires (Argentina) (1871.10.27 – 1883) |
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 Archbishop Antonino Arata
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 Bishop Severo Araújo y Silva
| Born: | 1846.03.02 (Spain) | | Consecrated Bishop: | 1906.10.14 | | Died: | 1910.08.06 († 64) |
| Titular Bishop of Temnus (1906.04.28 – 1910.08.06) Auxiliary Bishop of Santiago de Compostela (Spain) (1906.04.28 – 1910.08.06) |
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 Bishop Leopoldo A. Arcaira
| Born: | 1902.11.15 (Philippines) | | Ordained Priest: | 1930.10.26 | | Consecrated Bishop: | 1962.01.25 | | Died: | 1994.11.23 († 92) |
| Auxiliary Bishop of Zamboanga (Philippines) (1961.11.06 – 1966.10.17) Titular Bishop of Acrassus (1961.11.06 – 1994.11.23) Auxiliary Bishop of Malolos (Philippines) (1966.10.17 – 1988.01.25) |
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 Archbishop Antonio Arcari (70)
Titular Archbishop of Cæciri
Dominus fortitudo mea | Born: | 1953.05.08 (Pralboino, Italy) | | Ordained Priest: | 1977.06.11 | | Consecrated Bishop: | 2003.09.20 |
| Priest of Brescia (Italy) (1977.06.11 – 2003.07.18) Chaplain of His Holiness (1986.06.30 – 1998.11.10) Prelate of Honour of His Holiness (1998.11.10 – 2003.07.18) Apostolic Nuncio to Honduras (2003.07.18 – 2008.12.12) Titular Archbishop of Cæciri (2003.07.18 – ...) Apostolic Nuncio to Mozambique (2008.12.12 – 2014.07.05) Apostolic Nuncio to Costa Rica (2014.07.05 – 2019.05.25) Apostolic Nuncio to Monaco (2019.05.25 – 2023.05.16) |
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Archbishop Dominicus Arcaroli | Born: | 1731.12.24 (Italy) | | Ordained Priest: | 1755.05.08 | | Consecrated Bishop: | 1755.05.08 | | Died: | 1826.06.25 († 94) |
| Bishop of Lavello (1776.01.29 – 1792.03.26) Bishop of Vieste (Italy) (1792.03.26 – 1817.11.10) Titular Archbishop of Bostra (1817.11.10 – 1826.06.25) |
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Archbishop Gerolamo Archinto | Born: | 1672.06.08 (Italy) | | Consecrated Bishop: | 1711.01.25 | | Died: | 1721.10.01 († 49) |
| Titular Archbishop of Tarsus (1710.10.01 – 1721.10.01) Apostolic Nuncio to Italy (1711.03 – 1712.12.01) Apostolic Nuncio to Germany (1712.12.01 – 1720.11.21) Apostolic Nuncio to Poland (1720.11.21 – 1721.10.01) |
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Bishop Hyacinthus Archiopoli (Italo-Albanese Rite) |
Bishop Juan Arciniega | Born: | 1766.06.19 (Spain) | | Consecrated Bishop: | 1816.10.27 | | Died: | 1835.01.02 († 68) |
| Titular Bishop of Adraha (1816.09.23 – 1835.01.02) Auxiliary Bishop of Toledo (Spain) (1816.09.23 – 1835.01.02) |
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 Archbishop Joseph Adam Graf Arco
| Born: | 1733.01.27 (Austria) | | Ordained Priest: | 1755.12.07 | | Consecrated Bishop: | 1764.05.01 | | Died: | 1802.06.03 († 69) |
| Titular Bishop of Hippo Regius (Algeria) (1764.04.09 – 1776.07.15) Auxiliary Bishop of Passau (Germany) (1764.04.09 – 1776.07.15) Bishop of Hradec Králové (Czechia) (1776.07.15 – 1780.01.01) Bishop of Seckau (Austria) (1780.01.01 – 1802.06.03) Archbishop ad personam (1783 – 1802.06.03) |
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 Bishop Juan Carlos Arcq Guzmán (56)
Titular Bishop of Milevum
Auxiliary Bishop of Monterrey (Mexico)
| Born: | 1966.10.17 (Monterrey, Mexico) | | Ordained Priest: | 1997.08.15 | | Consecrated Bishop: | 2020.12.17 |
| Priest of Monterrey (Mexico) (1997.08.15 – 2020.10.17) Titular Bishop of Milevum (2020.10.17 – ...) Auxiliary Bishop of Monterrey (Mexico) (2020.10.17 – ...) |
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 Archbishop Alejandro Arellano Cedillo, C.O.R.C. (61)
Titular Archbishop of Besalú
Dean of Tribunal of the Roman Rota
President of Pontifical Commission for the Verification and Application of Mitis Iudex in the Churches of Italy
President of Appeals Court of Vatican City State
Mihi vivere Christus est |
 Bishop Buenaventura Arias
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 Bishop David Arias Pérez, O.A.R.
Pascere populum suum | Born: | 1929.07.22 (Mataluenga, Spain) | | Ordained Priest: | 1952.05.31 | | Consecrated Bishop: | 1983.04.07 | | Died: | 2019.05.09 (Teaneck, NJ, USA † 89) |
| Auxiliary Bishop of Newark (USA) (1983.01.25 – 2004.05.21) Titular Bishop of Badiæ (1983.01.25 – 2019.05.09) |
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Archbishop Giovanni Battista Ariberti, C.O. | Born: | 1686.05.10 (Italy) | | Ordained Priest: | 1710.12.26 | | Consecrated Bishop: | 1728.02.22 | | Died: | 1746? († 60) |
| Titular Archbishop of Palmyra (1728.02.19 – 1746?) |
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 Bishop José Miguel Aristegui Arostegui
| Born: | 1802.04.02 (Chile) | | Ordained Priest: | 1825.04.17 | | Consecrated Bishop: | 1869.08.29 | | Died: | 1876.06.16 († 74) |
| Titular Bishop of Himeria (1869.06.25 – 1876.06.16) Auxiliary Bishop of Santiago (Chile) (1869.06.25 – 1876.06.16) |
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 Bishop Nicolas Arlon, O. Carm.
Titular Bishop of Akka (1344.06.27 – ?) Auxiliary Bishop of Trier (Germany) (1344.06.27 – ?) |
 Bishop Francisco José Arnáiz Zarandona
| Born: | 1925.03.09 (Spain) | | Ordained Priest: | 1955.07.15 | | Consecrated Bishop: | 1989.01.06 | | Died: | 2014.02.14 († 88) |
| Auxiliary Bishop of Santo Domingo (Dominican Republic) (1988.12.02 – 2002.07.31) Titular Bishop of Leges (1988.12.02 – 2014.02.14) |
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Bishop William Richard Arnold | Born: | 1881.06.10 (USA) | | Ordained Priest: | 1908.06.13 | | Consecrated Bishop: | 1945.10.11 | | Died: | 1965.01.07 († 83) |
| Titular Bishop of Phocæa (1945.05.05 – 1965.01.07) Auxiliary Bishop of the Military Vicariate of United States of America (USA) (1945.05.05 – 1965.01.07) |
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Bishop Nikolaus Arresdorf, O.F.M. Conv. | Born: | 1545 (Luxembourg) | | Consecrated Bishop: | 1593 | | Died: | 1620.03.28 († 75) |
| Auxiliary Bishop of Hildesheim (Germany) (1592.11.23 – 1620.03.28) Auxiliary Bishop of Münster (Germany) (1592.11.23 – 1620.03.28) Auxiliary Bishop of Paderborn (Germany) (1592.11.23 – 1620.03.28) Titular Bishop of Akka (1592.11.27 – 1620.03.28) |
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Bishop Juan Ignacio Arrieta Ochoa de Chinchetru (72) Titular Bishop of Civitate
Secretary of Dicastery for Legislative Texts
Member of College for the review of appeals by clergy accused of delicta reservata
Sub tuum præsidium |
 Bishop Jean-François Mathieu Arrighi
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Bishop Juan Arroyo | Consecrated Bishop: | 1656 | | Died: | 1656.12.16 |
| Titular Bishop of Utica (1654.12.07 – 1656.12.16) Auxiliary Bishop of Sevilla (Spain) (1654.12.07 – 1656.12.16) |
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Bishop Andrés Arteaga Manieu (64) Titular Bishop of Baliana
Auxiliary Bishop of Santiago (Chile)
Hacia el Padre | Born: | 1959.01.17 (Santiago, Chile) | | Ordained Priest: | 1986.05.31 | | Consecrated Bishop: | 2001.08.19 |
| Priest of Santiago (Chile) (1986.05.31 – 2001.07.10) Titular Bishop of Baliana (2001.07.10 – ...) Auxiliary Bishop of Santiago (Chile) (2001.07.10 – ...) |
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Bishop Edmund Maria Josef Graf Artz von und zu Vasegg | Born: | 1739.05.12 | | Ordained Priest: | 1766.02.22 | | Died: | 1805.03.03 († 65) |
| Titular Bishop of Teja (1778.09.28 – 1805.03.03) Auxiliary Bishop of Wien (Austria) (1778.09.28 – 1805.03.03) |
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Bishop Juan Alfredo Arzube | Born: | 1918.06.01 (Ecuador) | | Ordained Priest: | 1954.05.05 | | Consecrated Bishop: | 1971.03.25 | | Died: | 2007.12.25 († 89) |
| Auxiliary Bishop of Los Angeles (USA) (1971.02.09 – 1993.09.07) Titular Bishop of Civitate (1971.02.09 – 2007.12.25) |
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