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1010–1066 · Medieval

Saint Arialdo (c. 1010 – June 27, 1066) is a Christian saint of the eleventh century. He was assassinated because of his efforts to reform the Milanese clergy. Arialdo was the child of a noble family, born at Cutiacum (Cucciago), near Como.

1751–1792 · Modern

Armand de Foucauld de Pontbriand (24 November 1751 – 2 September 1792) was a French Catholic prelate who served as vicar general of the Archdiocese of Arles and was one of the 191 Catholic Martyrs of September 1792, killed in the September Massacres during the French Revolution.

750–732 · Medieval

Armentarius of Pavia was Bishop of Pavia from 711 to 732. Armentarius succeeded Bishop Damian. During his episcopacy, he had an ongoing dispute with Benedict, Bishop of Milan, who insisted that Pavia was historically under the Metropolitan See of Milan, while Armentarius maintai…

1882–1952 · Contemporary · Secular Franciscan Order

Armida Barelli (1 December 1882 – 15 August 1952) was an Italian Roman Catholic who served in the educational field during her life and was also a professed member of the Secular Franciscan Order.

850–892 · Medieval

Saint Arn or Arno von Endsee (died 13 July 892) was the Bishop of Würzburg from 855 until his death. He was a pupil of Bishop Gozbald, who died on 20 September 855; Arn was elected bishop in his place.

750–821 · Medieval

Arno, Arn or Aquila (c. 750–821) was bishop of Salzburg, and afterwards its first archbishop. He preserved his voluminous correspondence from the scholar Alcuin of York. Arno was likely born in the mid-740s to a noble family in southeast Bavaria.

1837–1909 · Contemporary · Divine Word Missionaries

Arnold Janssen SVD (5 November 1837 – 15 January 1909), was a German-Dutch Catholic priest and missionary who is venerated as a saint. He founded the Society of the Divine Word, a Catholic missionary religious congregation, also known as the Divine Word Missionaries, as well as t…

1040–1087 · Medieval · Benedictines

Arnold (Arnoul) of Soissons or Arnold or Arnulf of Oudenburg (c. 1040–1087) is a saint of the Catholic Church, the patron saint of hop-pickers, Belgian brewers.

1838–1890 · Modern · Institute of the Brothers of the Christian Schools

Julian-Nicolas Rèche (2 September 1838 – 23 October 1890) was a French Roman Catholic religious of the Institute of the Brothers of the Christian Schools; he assumed the religious name of "Arnould" upon his profession in the congregation and became a noted educator.

582–641 · Medieval

Arnulf of Metz (c. 582 – c. 645) was a Frankish bishop of Metz and advisor to the Merovingian court of Austrasia. He later retired to the Abbey of Remiremont. In French he is also known as Arnoul or Arnoulf. In English he is known as Arnold. The Vita Sancti Arnulfi (c.

950–1059 · Medieval · Benedictines

Aron was an 11th-century Polish Bishop of Krakow, then Archbishop and the first Abbot of the Benedictine house in Tyniec. His name is known from the 13th century chronicle “Sede Vacante with krakowski” which lists the names of the first nine Bishops but which does not provide ye…

400–405 · Early Church

Arsacius of Tarsus (Greek: Ἀρσάκιος; before 324 – 11 November 405) was the intruding archbishop of Constantinople from 404 to 405, after the violent expulsion of John Chrysostom.

500–401 · Early Church

Saint Arsatius or Arsacius is a saint of whose life virtually nothing is known. He is said to have been a bishop of Milan, who lived either around 400 or in the 6th century, and possibly a martyr, but there is no evidence.

1849–1909 · Contemporary · Order of Friars Minor Capuchin

Arsenio da Trigolo, OFM Cap. (born Giuseppe Antonio Migliavacca; 13 June 1849 – 10 December 1909), was an Italian Catholic priest and a professed member from the Order of Friars Minor Capuchin.

1101–1206 · Medieval · Carthusian Order

Artaldus, also known as Arthaud, was a 13th-century Carthusian Bishop of Belley. Born in the castle of Sothonod in Savoy, in 1101. Much of his childhood is not known but at the age of eighteen, Artaldus entered the court of Duke Amadeus III, but after a year or so he left to bec…

1880–1951 · Contemporary · Salesians of Don Bosco

Artemide Zatti (12 October 1880 – 15 March 1951) was an Italian Roman Catholic professed religious of the Salesians of Don Bosco and a noted pharmacist who emigrated to Argentina in 1897.

1590–1643 · Reformation · Order of Friars Minor

Arthur "Francis" Bell, OFM (13 January 1590 – 11 December 1643) was an English Franciscan friar. He was found guilty of being a Catholic priest by a court sitting under the auspices of Parliament during the English Civil War. He was executed at Tyburn in London.

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Aré or Aregius of Nevers was bishop of Nevers in France and is known because he subscribed to the deeds of both the Fifth Council of Orléans, in 549 and the Second Synod of Paris in 551.

1868–1940 · Contemporary · Third Order of Saint Dominic

María Ascensión Nicol y Goñi, O.P., (14 March 1868 – 24 February 1940) was a Spanish Roman Catholic religious sister of the Third Order of St. Dominic.

100–200 · Early Church

Aspren or Asprenas (Italian: Sant'Asprenato, Sant'Aspreno, Sant'Aspremo) was a 1st-century Christian saint and venerated as the first Bishop of Naples.

1871–1948 · Contemporary

Assunta Marchetti, SS (15 August 1871 – 1 July 1948) was an Italian Catholic who cofounded of the Missionary Sisters of Saint Charles Borromeo. She worked in Brazil from 1895 until her death. Her priest brother Giuseppe is titled as Venerable on the path to sainthood.

223 · Early Church

Asterius of Ostia (d. 3rd century AD) was a martyred priest venerated as a saint in the Catholic Church. Information on him is based on the apocryphal Acts of Saint Callixtus.

955–1030 · Medieval · Benedictines

Saint Astrik of Pannonhalma (also known as Anastasius, Astericus, Ascrick, Astrissicus) (died c. 1030/1040) is a saint of the 11th century. Radla was a Czech or Croat from Bohemia, who was a monk in Hungary.

830–872 · Medieval

Saint Athanasius I (c. 832 – 872) was the bishop of Naples from 850 to his death. This Athanasius should not be confused with his nephew, Athanasius II.

801–926 · Medieval

Athelm (or Æthelhelm; died 8 January 926) was an English churchman, who was the first Bishop of Wells, and later Archbishop of Canterbury. His translation, or moving from one bishopric to another, was a precedent for later translations of ecclesiastics, because prior to this time…

501–627 · Medieval

Attala or Atala (died 622) was a disciple of Columbanus and his successor as abbot of Bobbio from 615. Attala was originally from Burgundy, and first became a monk at the abbey of Lérins.

850–919 · Medieval · Benedictines

Attilanus (Atilanus, Aragonese: Sant Atilano) (937–1007) was an Aragonese Benedictine and bishop of Zamora. He was prior of Moreruela Abbey. Saint Atilan (Attilanus), bishop of Zamora (Oct. 5, 10th century).

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Attilio, one of the legendary martyrs of the Theban Legion, is venerated as a saint in the area of Trino Vercellese, in Piedmont, north-west Italy and commemorated on 28 June.

1913–1972 · Contemporary

Attilio Giordani A.S.C. (13 February 1913 – 18 December 1972) was an Italian Roman Catholic and member from the Association of Salesian Cooperators. Giordani studied in Milan where he encountered the Salesians of Don Bosco alongside his brother Camillo.

1070–1153 · Medieval · Benedictines

Atto of Pistoia, or Saint Atto (Portuguese: Santo Atão; c. 1070 – 22 May 1153), was a Catholic bishop and a professed member from the Vallumbrosan Order as well as the Bishop of Pistoia and a noted historiographer. Atto was born around 1070.

600–669 · Medieval

Aubert of Cambrai (French: Aubert de Cambrai) or Aubertus was a Merovingian Bishop of Cambrai and Arras and a Frankish saint. Aubert of Cambrai was born around c. 600 AD in Austrasia, Francia.

609–686 · Medieval

Audoin (Latin: Audoenus; AD 609 – on 24 August 684), venerated as Saint Audoin, was a Frankish bishop, courtier, hagiographer and saint. He authored Vita Sancti Eligii which outlines the life and deeds of Eligius, his close friend and companion in the royal court and the Church.

595–670 · Medieval · Benedictines

Audomar (died c. 670), better known as Omer, was a bishop of Thérouanne, after whom nearby Saint-Omer in northern France was named. He is venerated as a saint in the Catholic and Eastern Orthodox churches.

200–259 · Early Church

Augurius of Tarragona or Saint Augurius  (died 259) was a Christian Hispano-Roman clergyman. It is also cited as Augurinus. Exerting the office of deacon was martyred along with bishop Fructuosus and deacon Eulogius.

1858–1893 · Modern · Salesians of Don Bosco

August Franciszek Maria Anna Józef Kajetan Czartoryski, SDB, (2 August 1858 – 8 April 1893) was a Polish prince who was born in Paris during his family's exile, his constant frail health saw much of his childhood being shuttled to various health spas.

1881–1948 · Contemporary · Salesians of Don Bosco

August Józef Hlond, SDB (5 July 1881 – 22 October 1948) was a Polish Salesian prelate of the Catholic Church who served as Archbishop of Poznań and Gniezno from 1926 to 1946 and as Archbishop of Gniezno and Warsaw from 1946 until his death.

1814–1856 · Modern

Auguste Chapdelaine, Chinese name Mǎ Lài (Chinese: 馬賴; 6 February 1814 – 29 February 1856) was a French Christian missionary of the Paris Foreign Missions Society.

1260–1323 · Medieval · Dominican Order

Augustin Kažotić (Italian: Agostino Casotti, Hungarian: Kazotics Ágoston; 1260 – 3 August 1323) was a Croatian prelate of the Catholic Church and professed member from the Order of Preachers who served as the Bishop of Lucera from 1322 until his death.

1822–1851 · Modern

Augustin Schoeffler (22 November 1822–1 May 1851) was a French saint and martyr in the Catholic Church and a member of the Paris Foreign Missions Society. He was a priest in Lorraine who joined the Foreign Missions of Paris.

1430–1493 · Medieval · Dominican Order

Augustine Fangi (also, Augustine of Biella; 1430 – 22 July 1493) was an Italian Dominican friar and Catholic priest. He was commonly regarded in his time as a miracle worker, and, in serving as the prior of several of his Order's monasteries, was concerned with restoring and main…

1880–1956 · Contemporary

Augustine John Ukken was a Syrian Catholic (Syro-Malabar Catholic) priest from the Indian state of Kerala in Thrissur and the founder of the Congregation of Sisters of Charity (CSC).

1854–1897 · Modern

John Augustus Tolton (baptized Augustine; April 1, 1854 – July 9, 1897) was an African American Catholic who served as the first openly Black Catholic priest in the United States, having been ordained in Rome in 1886.

1450–1535 · Reformation · Carthusian Order

Augustine Webster, O.Cart (died 4 May 1535) was an English Catholic martyr. He was the prior of Our Lady of Melwood, a Carthusian house at Epworth, on the Isle of Axholme, in north Lincolnshire, in 1531. His feast day is 4 May.

1746–1815 · Modern

Augustine Zhao Rong (Chinese name: 趙榮; 赵荣; Zhào Róng; 1746–1815) was a Chinese Catholic priest who was martyred in 1815. He was canonized by Pope John Paul II on October 1, 2000, as one of the 120 Martyrs of China. He was born in 1746 in Wuchuan county of Guizhou.

1876–1972 · Contemporary

Augusto Bertazzoni (10 January 1876 - 30 August 1972) was an Italian Roman Catholic prelate who served as the Bishop of Potenza from 1930 until his retirement in 1966.

250–250 · Early Church

Aurea of Ostia (or Aura; in Greek, Chryse; both names mean “golden girl”) is venerated as the patron saint of Ostia. She was martyred sometime during the mid-third century, either during the reign of Roman Emperor Claudius Gothicus or Trebonianus Gallus.

523–551 · Medieval

Aurelianus (523 – 551) was Archbishop of Arles from 546 to 551. His predecessors were Auxanius (bishop form 542–546) and Caesarius of Arles (d. 542). His father Sacerdos (d. 552) was an Archbishop of Lyon. His cousin Nicetius (d. 573) succeeded his father as Archbishop of Lyon.

478 · Early Church

Auspicius of Toul (Latin: Auspicius Tullensis; French: Auspice de Toul; d.c.490?) was a 5th-century bishop of Toul, the fifth of those recorded, and a saint of the Roman Catholic church.

630–704 · Medieval

Austrebertha (Austreberta, Eustreberta, Austreberta of Pavilly; French: Austreberthe) (630–February 10, 704) was a French nun of the Middle Ages, who took the veil very young, and became a nun at the Port Monastery in the Ponthieu.

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Austrebert or Austrebertus was bishop of Vienne in the Dauphiné, France, during the first half of the 8th century. He was in post by 719, as Pope Gregory II sent him a letter dated 31 August of that year, and was still in post on 7 March 742, when he received a letter from Pope Z…