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1185–1224 · Medieval · Cistercians

Adolf of Osnabrück, O.Cist (also known as Adolphus, Adolph, Adolf of Tecklenburg), was born in Tecklenburg about 1185, a member of the family of the Counts of Tecklenburg in the Duchy of Westphalia.

1314 · Medieval

Adolfo de Túnez was a member of the Catholic Church who died in 1314. He is recognized as a blessed.

624–704 · Medieval · Benedictines

Adomnán or Adamnán of Iona , also known as Eunan , was an abbot of Iona Abbey (r. 679–704), hagiographer, statesman, canon jurist, and saint. He was the author of the Life of Columba (Latin: Vita Columbae), probably written between 697 and 700.

885 · Medieval · Benedictines

Pope Adrian III or Hadrian III (Latin: Adrianus or Hadrianus; died 8 July 885) was the bishop of Rome and ruler of the Papal States from 17 May 884 to his death on 8 July 885.

850–875 · Medieval

Saint Adrian of May (sometimes given as "Magridin") (d. 875) was a martyr-saint of ancient Scotland, whose cult became popular in the 14th century. He is commemorated on 3 December. He may have been a bishop of Saint Andrews.

490–536 · Medieval

Pope Agapetus I (489/490 – 22 April 536) was the bishop of Rome from 13 May 535 to his death on 22 April 536. His father, Gordianus, was a priest in Rome and he may have been related to two popes, Felix III and Gregory I.

574–681 · Medieval · Benedictines

Pope Agatho (577 – 10 January 681) served as the bishop of Rome from 27 June 678 until his death on 10 January 681. He heard the appeal of Wilfrid of York, who had been displaced from his see by the division of the archdiocese ordered by Theodore of Canterbury.

750–751 · Medieval

Saint Agilulfus (or Agigulf), Abbot of Stavelot, Bishop of Cologne and martyr, died around the year 750. Apart from his name, "the events of his life are uncertain", and an early account written by a monk of Malmedy is deemed untrustworthy.

535–596 · Medieval · Basilian monks

Agnellus of Naples (Italian: Agnello) or Aniello the Abbot (535, Naples - 14 December 596, Naples) was a Basilian monk and later Augustinian friar. He is venerated as a saint by the Catholic Church, with a feast day on 14 December, the date of his death.

1194–1236 · Medieval · Franciscans

Agnellus of Pisa, OFM (c. 1195 – 1236), was an Italian Franciscan friar. As the order's first minister provincial in England (1224–1236), he is considered the founder of the Franciscans in England.

1197–1253 · Medieval · Poor Clares

St. Agnes Sciffi, of Assisi (1197/1198 - 1253) was one of the founding members of the Order of Poor Ladies (The Poor Clares).  Agnes eventually established the convent of Monticelli near Florence, then went on to establish orders in Verona, Padua, Venice, and Mantua.

1335–1352 · Medieval · Poor Clares

Agnes of Bavaria (1335 – 11 November 1352) was a Bavarian nun from Munich and a member of the House of Wittelsbach. The daughter of Louis IV, Holy Roman Emperor, was brought up in a monastery of Clarissan nuns.

1211–1282 · Medieval · Poor Clares

Agnes of Bohemia, OSC (Czech: Svatá Anežka Česká, 20 January 1211 – 2 March 1282), also known as Agnes of Prague, was a medieval Bohemian princess who opted for a life of charity, mortification of the flesh and piety over a life of luxury and comfort.

1268–1317 · Medieval · Nuns of the Order of Preachers

Agnes of Montepulciano, OP (28 January 1268 – 20 April 1317) was a Dominican prioress in medieval Tuscany who was known as a miracle worker during her lifetime. She is honored as a saint by the Catholic Church.

600–588 · Medieval

St. Agnes of Poitiers is a French saint and abbess, who was "recognized for her holiness and intelligence" and called "model of the conventual life". She served as abbess of Holy Cross convent in Poitiers, France until her death in 586.

1190–1260 · Medieval · Franciscans

Blessed Agno was born in Gallur, in the province of Zaragoza, in 1190 and died in Zaragoza in 1260. His real name was Lope Fernando de Ayn; the nickname was given to him by Pope Innocent VI in recognition of his kindness.

769–840 · Medieval

Agobard of Lyon (c. 769 – 840) was a Spanish-born priest and archbishop of Lyon, during the Carolingian Renaissance. The author of multiple treatises, ranging in subject matter from the iconoclast controversy to Spanish Adoptionism to critiques of the Carolingian royal family, Ag…

1435–1458 · Medieval · Order of St. Augustine

Agostina Camozzi (1435 - 13 February 1458) - in religious Cristina - was an Italian Roman Catholic professed religious from the Order of Saint Augustine.

497–580 · Medieval

Bishop Agricola was a 6th-century Bishop of Chalon-sur-Saône in France, where he built a leper-hospital. Agricola was born to a senatorial family around 497. In 532 he was elected to the episcopal see of Chalon-sur-Saene, where he long shone for his virtues.

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.

1398–1495 · Medieval · Dominican Order

Aimone Taparelli (c. 1395 – 15 August 1495) was an Italian Roman Catholic priest and a professed member from the Order of Preachers. He served as an Inquisitor-General for his order in the Lombard and Liguria regions and became a travelling preacher in northern Italian cities.

1216 · Medieval · Cistercians

Alacrinus was a Cistercian monk of the Catholic Church. He died in 1216 at Casamari and is recognized as a blessed.

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.

1250–1307 · Medieval · Carmelites

Albert of Trapani (born Albert degli Abati; Sicilian: Sant’Albertu di l’Abati; c. 1240 – 7 August 1307) was an Italian Roman Catholic priest and a professed member of the Carmelites.

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.

1170–1230 · Medieval

Alberto Calvi, or de Calvo (Cilavegna, between 1170 and 1180 – Novara, October 8, 1230), was an Italian Catholic bishop, papal decretist under Pope Honorius III, and canon of Novara.

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.

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.

740–804 · Medieval · Benedictines

Alcuin of York , also called Ealhwine, Alhwin, or Alchoin, was an Anglo-Latin scholar, clergyman, poet, and teacher from York, Northumbria. He was born around 735 and became the student of Archbishop Ecgbert at York.

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.

1249–1309 · Medieval

Aldobrandesca (also known as Alda) (c. 1249, Siena, Italy – c. 1309) was an Italian saint and mystic. A short description of her life was published in 1584, which was later translated into Latin and published in the Acta Sanctorum.

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.

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.

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.

1443–1490 · Medieval · Carmelites

Luigi Rabatà, O.Carm (1443 - 8 May 1490) was an Italian Roman Catholic priest from the Order of Carmelites. He served as prior of his convent of Randazzo until his death which occurred after an attack in which an arrow was shot into his head.

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.