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1060–1140 · Medieval · Benedictines

Aibert (or Aybert) of Crespin, (also Aibert of Tournai) was a Benedictine monastic and hermit revered for his intense life of prayer, asceticism and devotion to Mary. His biography was written by a contemporary, Robert, Archdeacon of Oostrevand.

590–651 · Medieval

Aidan of Lindisfarne (Irish: Naomh Aodhán; died 31 August 651) was an Irish monk and missionary credited with converting the Anglo-Saxons to Christianity in Northumbria.

350 · Early Church

Saint Amon of Toul (otherwise Aimo or Amand) (fl. 375; date of death unknown, but perhaps c 423) was the second recorded bishop of Toul and is venerated as a saint by the Roman Catholic Church.

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Saint Albaud of Toul, otherwise Aladius or Albin (d. c. 525) was a 6th-century bishop of Toul. He is venerated as a saint in the Catholic church with a feast day celebrated on 1 March.

1583–1642 · Reformation · Benedictines

Alban Roe (born Bartholomew; 20 July 1583 – 21 January 1642) was an English Benedictine who was killed for ministering as a Catholic priest in 17th-century England. He is venerated as one of the Forty Martyrs of England and Wales. Bartholomew Roe was born in 1583, in Suffolk.

400–406 · Early Church

Alban of Mainz (Latin: Albanus or Albinus; supposedly died in or near Mainz) was a Catholic priest, missionary, and martyr in the Late Roman Empire. He is venerated as Saint Alban of Mainz in the Catholic Church, not to be confused with Saint Alban of Verulamium.

1863–1900 · Contemporary

Alberico (Alberic) Crescitelli (1863–1900), Chinese name Guo Xide (Chinese: 郭西德), was an Italian Catholic priest and missionary to China. Born in Italy on 30 June 1863, Alberico Crescitelli entered the Pontifical Institute for Foreign Missions in 1880 and was ordained a priest on…

1001–1109 · Medieval · Cistercians

Alberic of Cîteaux (died 26 January 1109), sometimes known as Aubrey of Cîteaux, was a French monk and abbot, one of the founders of the Cistercian Order. He is now honored as a saint.

701–784 · Medieval · Benedictines

Saint Alberic of Utrecht, Dutch: Alberik I van Utrecht, (died 21 August 784) was a Benedictine monk and bishop of Utrecht, in what is today the Netherlands. Alberic was the nephew of Saint Gregory of Utrecht.

1070–1128 · Medieval

Albero I of Louvain (1070 – 1 January 1128) was the 57th Prince-Bishop of Liège from 1123 until his death. Albero was the third son of Henry II, Count of Leuven and Adela of Tweisterbant.

1090–1180 · Medieval · Cistercians

Albert of Genoa, also known as Lambert of Genoa, was a Cistercian hermit. Born in Genoa, Italy, Albert entered the Cistercian abbey nearby. There he remained for the rest of his life as a lay brother and a hermit.

1166–1192 · Medieval

Albert of Louvain (1166 – 24 November 1192) was a cardinal of the Catholic Church and the Prince-Bishop of Liège. He was canonized as a saint on 9 August 1613 and his feast falls on the date of his death.

1031–1127 · Medieval

Albert, born in Normandy, was taken to Motta Montecorvino in Apulia, Italy as a child. He later became Bishop there. Albert became blind in later years, but was known for his visions and as a miracle worker.

1165–1229 · Medieval

Albert of Riga or Albert of Livonia (c. 1165 – 17 January 1229) was the third Catholic Bishop of Riga in Livonia. As the Bishop of Livonia, in 1201, he founded Riga, the modern capital city of Latvia, and the city was later made a bishopric.

1149–1215 · Medieval · Canons Regular of Saint Augustine

Albert of Jerusalem, OSC (1149 – 14 September 1214), also Albertus Hierosolymitanus, Albertus Vercelensis, Saint Albert, Albert of Vercelli or Alberto Avogadro, was a canon lawyer and saint.

1901–1952 · Contemporary · Society of Jesus

Alberto Hurtado, SJ , popularly known as Padre Hurtado, was a Chilean Jesuit priest, lawyer, social worker, and writer of Basque ancestry. He founded the Hogar de Cristo foundation in 1944.

1025–1095 · Medieval · Benedictines

Albert of Pontida, also known as Albert of Prezzate and Albert Prezzati (born in Prezzate in 1025; died in Pontida, Lombardy, on September 2, 1095), was a Lombard nobleman and knight who became a Benedictine monk and founder. He is venerated as a saint by the Catholic Church.

1200–1280 · Medieval · Dominican Order

Albertus Magnus OP (c. 1200 – 15 November 1280), also known as Saint Albert the Great, Albert of Swabia, Albert von Bollstadt, or Albert of Cologne, was a German Dominican friar, philosopher, scientist, and bishop.

469–550 · Medieval

Saint Albinus of Angers (French: Saint-Aubin; c. 470 – March 1, 550), also known as Saint Albin in English, was a French abbot and bishop. Born to a noble Gallo-Roman family at Vannes, Brittany, St. Albinus was a monk and from 504 A.D.

1000–1006 · Medieval

Alboin (530s – 28 June 572) was king of the Lombards from about 560 until 572. During his reign the Lombards ended their migrations by settling in Italy, the northern part of which Alboin conquered between 569 and 572.

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Saint Alchas (fl. 420) was the third bishop of Toul. He is venerated as a saint by the Roman Catholic Church. He is known only from a mention of his name in the manuscript of Adso and in the epitaphs of the bishops of Toul.

781 · Medieval

Alcmund of Hexham (died 7 September 780 or 781) became the 7th bishop of the see of Hexham in Northumberland when he was consecrated on 24 April 767; the see was centred on the church there founded by Wilfrid.

1164–1219 · Medieval

Aldebrandus or Aldebrand (Italian: Aldebrando da Fossombrone), also known as Hildebrand (1119–30 April 1219), was a Bishop of Fossombrone and a saint. Aldebrandus was almost certainly born at Sorrivoli in the comune of Roncofreddo, Italy.

639–684 · Medieval · Benedictines

Aldegund (c. 639–684), also Aldegundis or Aldegonde, was a Frankish Benedictine abbess who is honored as a saint by the Roman Catholic Church in France and by the Orthodox Church. Aldegund was closely related to the Merovingian royal family.

639–709 · Medieval · Benedictines

Aldhelm (Old English: Ealdhelm, Latin: Aldhelmus Malmesberiensis; c. 639 – 25 May 709), Abbot of Malmesbury Abbey, Bishop of Sherborne, and a writer and scholar of Latin poetry, was born before the middle of the 7th century.

1895–1942 · Contemporary

Aleksy Sobaszek (1895–1942) was a Polish Roman Catholic priest. He died in a Nazi concentration camp. He is one of the 108 Martyrs of World War II who were beatified by Pope John Paul II in 1999.

1556–1581 · Reformation · Society of Jesus

Alexander Briant, SJ (17 August 1556 – 1 December 1581) was an English Jesuit and martyr, executed at Tyburn. He was born in Somerset, and entered Hart Hall, Oxford (now Hertford College), at an early age.

100–117 · Early Church

Pope Alexander I (Greek: Αλέξανδρος, died c. 115) was the bishop of Rome from about 108/109 to 116/119 (according to the 2012 Annuario Pontificio). Some believe he suffered martyrdom under the Roman emperor Trajan or Hadrian.

1534–1592 · Reformation · Barnabites

Alexander (Alessandro) Sauli, B. (15 February 1534 – 11 October 1592) was an Italian priest who is called the "Apostle of Corsica". He is a saint of the Roman Catholic Church.

1200–1310 · Medieval · Servite Order

The Seven Holy Founders of the Servite Order (Bonfilius, Alexis, Manettus, Amadeus, Hugh, Sostene and Buonagiunta) were seven men of the town of Florence who became bound to each other in a spiritual friendship and started the Servite Order in the 13th century.

1845–1866 · Modern

Alexis U Se-yŏng (1845–March 11, 1866) was a Korean Catholic saint and martyr. Born in Sŏhŭng in the former Hwanghae Province, he was the third son of a wealthy noble family. As a teenager, he wished to become a Christian, but his father strongly opposed it.

1015–1085 · Medieval · Benedictines

Saint Alfanus I or Alfano I (died 1085) was the archbishop of Salerno from 1058 until his death. He was famed as a translator, writer, theologian, and medical doctor. He has been described as "the greatest cultural protagonist of literature and science in Salerno".

931–1050 · Medieval · Benedictines

Alferius (Italian: Sant'Alferio) (930–1050) was an Italian abbot and saint. Alferius was born in Salerno to the noble Pappacarbona family. He spent many years in service to Guaimar. Prince of Salerno.

1839–1910 · Contemporary

Alfonso Maria Fusco (23 March 1839 – 6 February 1910) was a Roman Catholic priest and the founder of the Sisters of Saint John the Baptist – also known as the Baptistine Sisters.

1599–1628 · Reformation · Society of Jesus

Alfonso Rodríguez Olmedo (10 March 1598 – 15 November 1628) was a Spanish Jesuit priest who was sent as a missionary among the Guarani people in Paraguay. He is honored as a martyr and saint by the Catholic Church.

1899–1939 · Contemporary

Alicja Jadwiga Kotowska ((1899-11-20)20 November 1899, Warsaw – 11 November 1939, near Wielka Piaśnica) was a Polish religious sister who was head of the Resurrectionist convent in Wejherowo between 1934 and 1939.

1070–1134 · Medieval

Allucio of Campugliano (or Allucio da Pescia) (1070–1134) was a Tuscan holy man who distinguished himself by his work on behalf of pilgrims and the poor, and for peace. In the Roman Catholic Church his feast day is celebrated on 23 October.

1804–1884 · Modern · Oratory of Saint Philip Neri

Luigi Scrosoppi (4 August 1804 – 3 April 1884) was an Italian priest of the Catholic Church who founded the Sisters of Providence of Saint Cajetan of Thiene. He was canonized in 2001.

1898–1942 · Contemporary · Divine Word Missionaries

Aloysius Liguda (23 January 1898 – 8 December 1942) was a Polish priest and is venerated as a blessed martyr of the Society Of The Divine Word Missionaries (SVD). Liguda was a chaplain, and teacher. He died at Dachau concentration camp in the course of medical experimentation.

1500–1591 · Reformation · Augustinians

Alonso de Orozco Mena (17 October 1500 – 19 September 1591) was a Spanish Roman Catholic priest from the Augustinian order. He was well known across Spain for his preaching abilities and for an austere and humble life.

1568–1591 · Reformation · Society of Jesus

Aloysius de Gonzaga, SJ (Italian: Luigi Gonzaga; 9 March 1568 – 21 June 1591) was an Italian aristocrat who became a member of the Society of Jesus. While still a student at the Roman College, he died as a result of caring for the victims of a serious epidemic.

1532–1617 · Reformation · Society of Jesus

Alphonsus Rodríguez SJ (Spanish: Alfonso) (25 July 1532 – 31 October 1617) was a Spanish Jesuit religious brother who is venerated as a saint in the Catholic Church. Rodríguez was the son of a wool merchant.

480 · Early Church

Saint Alpinus was the eighth bishop of Châlons-en-Champagne and lord of Baye. Alpin was the name traditionally given to firstborn sons. He is recognized as a saint by the Roman Catholic Church and his feast day is September 7.

800–874 · Medieval · Benedictines

Saint Altfrid (or Altfrid of Hildesheim) (died 15 August 874) was a leading figure in Germany in the ninth century. A Benedictine monk, he became Bishop of Hildesheim, and founded Essen Abbey. He was also a close adviser to the East Frankish King Louis the German.

750–849 · Medieval

Saint Altfried (died April 22, 849) was Bishop of Münster and abbot of the monasteries of Werden and Helmstedt. Following the death of his predecessor Gerfried, Altfried was appointed the third Bishop of Münster in 839.

1015–1091 · Medieval

Altmann (c. 1015 – 8 August 1091) was the Bishop of Passau from 1065 until his death. He was an important representative of the Gregorian reforms, monastic founder and reformer. He is venerated as a saint, but not officially canonised.

360–430 · Early Church · Augustinians

Alypius of Thagaste was bishop of the see of Thagaste (in present-day Algeria) in 394. He was a lifelong friend of Augustine of Hippo and joined him in his conversion (in 386; Confessions 8.12.28) and life in Christianity.

1110–1159 · Medieval · Cistercians

Amadeus of Lausanne, O.Cist (21 January c. 1110 – 27 August 1159) was a French Cistercian monk, abbot of Hautecombe Abbey and the twenty-third Bishop of Lausanne. Amadeus was born around 1110 in the castle of Chatte, west of Grenoble.

1200–1266 · Medieval · Servite Order

Amadeus of the Amidei was born in Florence in 1200 and served as a friar in the Servite Order. He died in 1266 at the Basilica of Our Lady of Sorrows and St. Philip Benizi in Florence. He is recognized as a saint in the Catholic Church.

601–670 · Medieval · Benedictines

Saint Amalberga of Maubeuge (also Amalia, or Amelia of Lobbes or Binche) was a Merovingian nun and saint who lived in the 7th century. Amalberga's father was Saint Geremarus. She was born in Brabant.