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530–625 · Medieval

Deicolus (also Déicole, Domgall, other variations; c. 530 – January 18, 625) is venerated as a saint in both the Catholic and Eastern Orthodox Churches. He was an elder brother of Saint Gall.

530–584 · Medieval

Saint Deiniol (died 572) was traditionally the first Bishop of Bangor in the Kingdom of Gwynedd, Wales. The present Bangor Cathedral, dedicated to Deiniol, is said to be on the site where his monastery stood. He is venerated in Brittany as Saint Denoual.

600 · Medieval

Deiniolen is a village in Gwynedd, Wales, at the foot of Elidir Fawr, in Llanddeiniolen Community. Deiniolen has views over Caernarfon (7 miles (11 km) away) and on a clear day, Holyhead Mountain and occasionally the Wicklow Mountains in Ireland, can be seen.

1284–1360 · Medieval · Third Order of Saint Francis

Delphine of Glandèves (or of Sabran) was born in 1284 in region of Provence, now part of France. She died on 26 November 1358, having lived as a Franciscan tertiary for most of her life. Delphine was the daughter and heiress of the Count of Puy-Michel.

1093–1156 · Medieval

Demetrius I (Georgian: დემეტრე I, romanized: demet're I) (c. 1093 – 1156), of the Bagrationi dynasty, was a Georgian monarch (mepe) who ruled the Kingdom of Georgia from 1125 to 1154 and again from 1155 until his death in 1156. He is also known as a poet.

1259–1289 · Medieval

Demetrius II the Self-Sacrificer or the Devoted (Georgian: დემეტრე II თავდადებული, romanized: demet're II tavdadebuli) (1259–12 March 1289) of the Bagrationi dynasty, was king (mepe) of Eastern Georgia reigning from 1270 until his execution by the Mongol Ilkhans in 1289.

1321 · Medieval

Demetrius of Tiflis or Demetrio da Tifliz was a 14th-century Christian layman and martyr from Georgia or Armenia. He is venerated in the Roman Catholic Church as one of the Four Martyrs of Thane, on April 9.

1402–1471 · Medieval · Carthusian Order

Denis the Carthusian (A.D. 1402–1471), also known as Denys van Leeuwen, Denis Ryckel, Dionysius van Rijkel, Dionysius Carthusianus, Denys le Chartreux (or other combinations of these terms), was a Roman Catholic theologian and mystic.

700–700 · Medieval

Dentelin of Mons, also known as Dentelin of Soignies (Latin: Dentelinus; died c. 16 March 656) was a Frankish saint. He was the son of Saint Waltrude and Madelgaire. Dentelin was born around c.

550–679 · Medieval

Deodatus (Dié, Didier, Dieudonné, Déodat, Adéodat) of Nevers (d. June 19, ca. 679 AD) was a bishop of Nevers from 655. Deodatus was born about 590 to an illustrious family of western France. In 655 Deodatus was appointed bishop of Nevers. He attended the Council of Sens in 657.

566–660 · Medieval

Derfel, known as Derfel Gadarn (adarn: "mighty, valiant, strong"), was a 6th-century Celtic Christian monk regarded as a saint. Local legend holds that he was a warrior of King Arthur.

480–554 · Medieval

Desideratus or Desiderius of Verdun (French: Désiré de Verdun, also Didier; c. 480 – 8 May 554) was Bishop of Verdun in France from 529 to 554. He is venerated as a Catholic saint, with his feast day on 23 August.

621 · Medieval

Desiderius of Auxerre (died 621) was bishop of Auxerre, in France, from 614 to 621. He was from Aquitaine, and is mentioned in the Gesta pontificum Autissiodorensium, as well as the Chronicle of Fredegar. He is known for his large bequest to his church, St.

600–611 · Medieval

Desiderius of Vienne (died 607) was a martyred archbishop of Vienne and a chronicler. Nothing is known about his early years. In 603, in a conflict with Brunhilda of Austrasia, the legitimacy of whose children he had attacked, he was deposed after she combined forces with Aridiu…

600–664 · Medieval · Benedictines

Deusdedit (died c. 664) was a medieval Archbishop of Canterbury, the first native-born holder of the see of Canterbury. By birth an Anglo-Saxon, he became archbishop in 655 and held the office for more than nine years until his death, probably from plague.

1201–1236 · Medieval · Dominican Order

Diana degli Andalò, OP (1201 – 10 June 1236), sometimes d'Andalo, was a Dominican nun who founded a convent in Italy dedicated to Saint Agnes. Diana d'Andalò was born into a powerful Roman family in Bologna, Italy in 1201. She is described as having been "rather spoiled".

542 · Medieval

Saint Diarmaid the Just (also known as Diermit, Dhiarmuit, Dermod, Diermedus, Diermetus, Diermitius, Diermitius) was a Catholic abbot of Inis Clothrann (Inchcleraun), Lough Ree, County Longford and of Faughalstown, County Westmeath and a famous Irish confessor of the late-sixth c…

1400–1463 · Medieval · Franciscans

Didacus of Alcalá (Spanish: Diego de Alcalá), also known as Diego de San Nicolás, was a Spanish Franciscan lay brother who served among the first group of missionaries to the newly conquered Canary Islands.

580–655 · Medieval

Saint Didier, also known as Desiderius (c. 580 AD – November 15, 655), was a Merovingian-era royal official of aristocratic Gallo-Roman extraction. He succeeded his own brother, Rusticus of Cahors, as bishop of Cahors after the latter's murder.

1200–1208 · Medieval · Cistercians

Diego de Acebo (also known as Diaz de Osma, Alphonsus Didacus, Didacus Acebes) was bishop of Osma (Castile, Spain) from 1201 to 1207. Diego de Acebo was prior of the cathedral chapter of the Catedral de Santa María de la Asunción in El Burgo de Osma, where Dominic of Osma became…

475–544 · Medieval

Dionysius Exiguus (Latin for "Dionysius the Humble"; Greek: Διονύσιος; c. 470 – c. 544) was a 6th-century Eastern Roman monk born in Scythia Minor.

1420–1492 · Medieval

Dionysius I of Constantinople (Greek: Διονύσιος; died 1492) was Ecumenical Patriarch of Constantinople two times, from 1466 to 1471 and from 1488 to 1490. He is honoured as a saint in the Eastern Orthodox Church and his feast day is 23 November.

1300–1385 · Medieval

Saint Dionysius I (Russian: Дионисий, romanized: Dionisy; secular name: David; c. 1300 – 15 October 1385) was the metropolitan of the Russian Orthodox Church from 1384 to 1385.

619–700 · Medieval

Saint Disibod (619–c. 674) was an Irish monk and hermit, first mentioned in a martyrologium by Hrabanus Maurus (9th century). Hildegard of Bingen around 1170 composed a Vita of Saint Disibod. He is commemorated on 8 September.

600–658 · Medieval

Diuma (or Dwyna or Duma) was the first Bishop of Mercia in the Anglo-Saxon Kingdom of Mercia, during the Early Middle Ages. All that is known of Diuma's life is contained in a short account in Bede's Ecclesiastical History of the English People.

1201 · Medieval

Dmitar Nemanjić (Serbian Cyrillic: Дмитар Немањић, d. after 1286), also known as Dimitrije Nemanjić (Serbian Cyrillic: Димитрије Немањић), was a Serbian prince, from the Nemanjić dynasty.

1350–1389 · Medieval

Dmitry Ivanovich Donskoy (Russian: Дми́трий Ива́нович Донско́й; 12 October 1350 – 19 May 1389) was Prince of Moscow from 1359 and Grand Prince of Vladimir from 1363 until his death. He was the heir of Ivan II.

1275–1296 · Medieval

Sant Dnyaneshwar (Marathi pronunciation: [d̪ɲaːn̪eʃʋəɾ]), (Devanagari : सन्त ज्ञानेश्वर), pronunciation also referred to as Jñāneśvara, Jñānadeva, Dnyandev or Mauli or Dnyandev Vitthal Kulkarni (1275–1296 (living samadhi)), was a 13th-century Indian Marathi saint, poet, philosoph…

500 · Medieval

Dogfan, also known as Doewan, was a saint and martyr who lived in 5th century Wales. He is venerated in the Anglican Church, Eastern Orthodox Church, True Orthodox Church, and Roman Catholic Church, on 13 July. He is the patron saint of Llanrhaeadr-ym-Mochnant in Wales.

1243–1250 · Medieval

Dominguito del Val (c. 1243 – c. 1250) was a legendary child in medieval Spain, allegedly a choirboy ritually murdered by Jews in Zaragoza (Saragossa).

995–1060 · Medieval · Benedictines

Dominic Loricatus, O.S.B. Cam. (Italian: San Domenico Loricato; 995 - 1060), was an Italian monk, born in the village of Luceolis near Cantiano (then in Umbria, now in the Marche).

1019–1109 · Medieval

Dominic de la Calzada (or Dominic of the Causeway) (Spanish: Santo Domingo de la Calzada) (1019 – 12 May 1109) was a saint from a cottage in Burgos very close to La Rioja. Born Domingo García in Viloria de Rioja, he was the son of a peasant named Ximeno García.

1384–1461 · Medieval · Carthusian Order

Dominic of Prussia (German: Dominikus von Preußen; Latin: Dominicus Prutenus; 1382–1461) was a Carthusian monk and ascetical writer. He is credited with a popular early form of the Rosary which focused on meditation. Born in Danzig (contemporarily Gdańsk), Prussia.

1000–1073 · Medieval · Benedictines

Dominic of Silos OSB (Spanish: Santo Domingo de Silos) (1000 – 20 December 1073) was a Spanish monk, to whom the Abbey of Santo Domingo de Silos, where he served as the abbot, is dedicated. He is revered as a saint in the Catholic Church. His feast day is 20 December.

600–545 · Medieval

Domenico of Arras was a Pre-congregational saint and Bishop of Arras, France from 540AD to about 545AD. His feast day is 6th Feb.

600–560 · Medieval

Domitian of Huy (Latin: Domitianus; also, of Maestricht) was a Gaulish bishop of the sixth century who is noted for both his generosity and writings against heresy. He is venerated as a saint. Domitian was chosen bishop of Tongeren, but later moved his see to Maastricht.

564–602 · Medieval

Domitian (Latin: Domitianus, Greek: Δομιτιανός; c. 550 – 602) was the nephew of the Roman emperor Maurice and the archbishop of Melitene in Roman Armenia from around 580 until his death.

800–900 · Medieval

Domitian of Carantania or Domitian of Carinthia (German: Domitian von Kärnten, Slovene: Domicijan Koroški; died c. 802), also known as Domislav and Tuitianus, was a Slavic nobleman in the principality of Carantania (present-day Carinthia, Austria) during the reign of Charlemagne.…

650 · Medieval · Benedictines

Domne Eafe , also Domneva, Domne Éue, Æbbe, Ebba, was, according to the Kentish royal legend, a granddaughter of King Eadbald of Kent and the foundress of the double monastery of Minster in Thanet Priory at Minster-in-Thanet during the reign of her cousin King Ecgberht of Kent.

500 · Medieval

Saint Domninus of Vienne (French: Domnin, Domnus, Donnin; d. 536) was a bishop of Vienne in France, venerated as a saint. Domninus was born in the Dauphiné. He succeeded Julian as bishop in 533.

600 · Medieval

St Dona's Church, Llanddona ) is a small 19th-century parish church in the village of Llanddona, in Anglesey, north Wales. The first church on this site was built in 610. The present building on the site dates from 1873, and was designed by the rector at the time.

650–716 · Medieval

St. Donald of Sheridan, also known as Donivald or Domhnall, was an eighth-century Scottish saint who lived at Ogilvy, in the former Forfarshire.

594–660 · Medieval

Donatus (d. after 658) was a bishop of Besançon, founder of the monastery Palatium (later Saint-Paul) in Besançon and author of a rule for nuns. He is venerated as a saint since the 11th century; his feast day is August 7.

701–876 · Medieval

Donatus of Fiesole (died 876) was an Irish teacher and poet, and Bishop of Fiesole. Donatus was born in Ireland to noble parents towards the end of the eighth century.

1179–1198 · Medieval · Benedictines

Donatus was a Benedictine monk. He was born in Ripacandida, Italy. He became a Benedictine in 1194, at Petina, Italy.

750–811 · Medieval

Donatus (second half of 8th century Zadar – first half of 9th century), also called Donato of Zara, was a Dalmatian saint who became a bishop and a diplomat for the Dalmatian city-state of Zadar (Zara). His feast day is celebrated on 25 February.

550–617 · Medieval

Saint Donnán of Eigg (also known as Donan; died 17 April 617) was a Gaelic priest, likely from Ireland, who attempted to introduce Christianity to the Picts of northwestern Scotland during the Early Middle Ages.

1347–1394 · Medieval

Dorothea of Montau (6 February 1347 – 25 June 1394) was an anchoress and visionary of 14th century Prussia. After centuries of veneration in Central Europe, she was beatified in 1976.

510–565 · Medieval

Dorotheus of Gaza (Ancient Greek: Δωρόθεος τῆς Γάζης Dorotheos tes Gazes; ca. 500 – 560 or 580), Dorotheus the Archimandrite or Abba Dorotheus, was a Christian monk and abbot.

600–600 · Medieval

Dositheus of Gaza was a sixth century monk and saint. Originally a page, he entered the monastery of Seridus close to Gaza where he became a disciple of Dorotheus of Gaza and died due to a severe illness at a young age.