May 23 (Eastern Orthodox liturgics)

• Holy Myrrh-bearer Mary, the wife of Cleopas, aunt of Jesus (1st century)[1]
• Saint Manaen (Manahen), prophet and teacher of the Church of Antioch (Acts 13:1) (1st century)[2]
• Martyr Seleucus (Selefkos), by sawing.[3]
• Saint Michael the Confessor, Bishop of Synnada in Phrygia Salutaris (826)[4][5][note 2]
• Hieromartyr Michael the black-robed, monk of St. Sabbas Monastery (9th century)[7][8]

• Hieromartyrs Epitacius, first Bishop of Tui in Galicia (Spain); and Basileus, second Bishop of Braga in Portugal c. 60-95 (1st century)[9][10]
• Saint Euphebius, Bishop of Naples in Italy.[10][11]
• Martyr Salonas the Roman, by the sword.[12]
• Martyrs Donatianus and Rogatianus of Nantes, brothers (c. 284-305)[13][note 3]
• Saint Merculialis of Forli (Mercurialis), Bishop of Forlì, zealous opponent of paganism and Arianism (406)[15]
• Saint Desiderius of Langres, Bishop of Langres in Gaul (407)[10][16][note 4]
• Martyrs Quintianus, Lucius and Julianus, with 19 other Christians in North Africa during the persecution of the Arian Vandals (430)[17]
• Saint Patricius (Patrice), Bishop of Bayeux in Normandy 464-469 AD (469)[18]
• Saints Eutychius and Florentius, two monks who governed a monastery in Valcastoria near Nursia, Italy (540)[19][note 5]
• Saint Goban (Gobhnena), Abbot of the monastery of Old Leighlin, from where he went to Tascaffin in Co. Limerick, Ireland (6th/7th century)[11]
• Hieromartyr Desiderius, Bishop of Vienne (608)[10][20][note 6]
• Saint Syagrius (Siacre) of Nice, a monk at Lérins Abbey, who later founded the monastery of St Pons, at Cimiez, after which he became Bishop of Nice 777-787 (787)[21][note 7]
• Saint Guibertus, a hermit on his own estate of Gembloux in Brabant, Belgium, who retired to the monastery of Gorze in France (962)[11]

• Saint Damian (Damianos in monasticm), (King Demetrius) of Georgia (1125-1156), Hymnographer (1156)[23]
• Saint Euphrosyne of Polatsk, Princess (1173)[24][note 8]
• Saint Simon, Bishop of Suzdal (c. 12th century)[25][26][note 9]
• Saint Abramios of Yaroslavl, monk and abbot of the Savior Monastery in Yaroslavl (1219)[28]
• Saint Ioannicius I, Metropolitan of Peć and Archbishop of Serbia 1272-1276 AD (1279)[7][note 10]
• Saint Anthony, Bishop of Rostov (1336)[26][29]
• Saint Cyril, Bishop of Rostov (1384)[26][30]
• Saint Paisius of Galich, abbot (1460)[31]
• Saints Adrian and Bogolep of Uglich, monks of St. Paisius of Uglich Monastery (late 15th century)[32][note 11]
• Saints Anthony and Joannicius of Zaonikiev Monastery (Vologda) (16th century)[34]
• Saint Dorotheus of Pskov Lavra, monk and hermit (1622),[note 12] and Monk Hilarion of the Dormition of the Theotokos monastery near Podolsk (17th-18th century)[36]
• Saint Alexander, Bishop and Wonderworker of Pereiaslav (17th century)[26][37]
• Saint Joachim, monk of St. Nicholas monastery of Sartoma (17th century)[38]
• Synaxis of All Saints of Rostov and Yaroslavl (established on March 10, 1964):[39][40]

• Rostov Wonderworkers: Bishop Leontius (1073); Archimandrite Abraham the wonderworker (1073-1077); Bishop Isaiah, wonderworker (1090); Prince Basil (1238); Bishop Ignatius (1288); Peter, Tsarevich of Ordynsk (1290); Bishop James (1391); Archbishop Theodore (1394); Blessed Isidore, Fool-for-Christ (1474); Blessed John of the Hair-Shirt (the Merciful), Fool-for-Christ (1580); Monk Irenarchus the Hermit (1616); Metropolitan Demetrius (1709);
• Yaroslav Wonderworkers: Princes Basil (1249); Constantine (1257); Theodore (1299) and his sons David (1321) and Constantine (XIV);
• Pereslavl Wonderworkers: Monk Nikita the Stylite (1186); Prince Alexander Nevsky (1263); Prince Andrew of Smolensk (15th century); Monk Daniel the Archimandrite (1540);
• Uglich Wonderworkers: Prince Roman (1285); Monk Paisius (1504); Monk Cassian (1504); Monk Ignatius of Lomsk (1591); Tsarevich Demetrius (1591);
• Poshekhonsk Wonderworkers: Monk Sylvester of Obnora (1379); Monk Sebastian (1542); Hieromartyr Adrian (1550);[41] Monk Gennadius of Liubimograd and Kostroma (1565).

• Icon of the Theotokos 'Thou Art the True Vine' .[42][43]
• Uncovering of the relics (1164) of St. Leontius, Bishop and Wonderworker of Rostov (1073)[44]
• Saint Athanasius of Novolotsk, fool-for-Christ (16th/17th century)[45][note 13]
• Hieromartyr Daniel with 30 monks and 200 laymen of Uglich, during the Polish–Muscovite War (1608)[48][note 14]
• Repose of Hieromonk Damascene of Valaam (1825)[7]
• Repose of Hieroschemamonk Meletius of Svir, disciple of Elder Theodore of Svir (1877)[7]
• Repose of Nun Euphrosyne, disciple of St. Barsanuphius of Optina (1934)[7]
• Restitution of the holy relics of Saint Joachim of Ithaca (1868)[51][note 15]
• Uncovering of the relics of martyrs Evdokia Sheykovoy, Daria Timaginoy, Daria Ulybin, and Mary Neizvestnaya (2001)[53][note 16]

• 
  Icon of the Myrrhbearing Women (The Three Marys, including Mary of Clopas) at the Tomb of Christ (Kizhi, Russia, 18th century).
• 
  Tomb of Sts. Donatian and Rogatian in the Basilica of Sts. Donatian and Rogatian. The tomb is empty, as the relics were transferred to Ostia in the 12th century.
• 
  Bell tower of the Abbey of St Mercurialis of Forlì, Forlì.
• 
  Saint Patricius (Patrice), Bishop of Bayeux.
• 
  St. Demetrius I of Georgia, known as Damian after tonsure.
• 
  St. Euphrosyne of Polatsk.
• 
  Rostov Wonderworkers: Sts. Abraham, Isaiah, Leontiy and Ignatiy of Rostov with Sergius of Radonezh.
• 
  Rostov Wonderworkers: St. Abraham of Rostov.
• 
  Rostov Wonderworkers: St. Dimitry of Rostov.
• 
  Rostov Wonderworkers: St. Ignatius of Rostov.
• 
  Yaroslav Wonderworkers: Sts. David, Theodore and Constantine of Yaroslavl (15th century).
• 
  Pereslavl Wonderworkers: Monk Nikita the Stylite.
• 
  Pereslavl Wonderworkers: St. Alexander Nevsky.
• 
  Pereslavl Wonderworkers: Monk Daniel the Archimandrite (1668).
• 
  Poshekhonsk Wonderworkers: St. Adrian of Poshekhonye.

• May 23/June 5. Orthodox Calendar (PRAVOSLAVIE.RU).
• June 5/May 23. HOLY TRINITY RUSSIAN ORTHODOX CHURCH (A parish of the Patriarchate of Moscow).
• Complete List of Saints. Protection of the Mother of God Church (POMOG).
• May 23. OCA - Lives of the Saints.
• Dr. Alexander Roman. May. Calendar of Ukrainian Orthodox Saints (Ukrainian Orthodoxy - Українське Православ'я).
• Dr. Alexander Roman. Saints of the Kyivan Baroque Period. Ukrainian Orthodoxy - Українське Православ'я.
• May 23. Latin Saints of the Orthodox Patriarchate of Rome.
• May 23. The Roman Martyrology.

Greek Sources

• Great Synaxaristes: (in Greek) 23 ΜΑΪΟΥ. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ.
• (in Greek) Συναξαριστής. 23 Μαΐου. ECCLESIA.GR. (H ΕΚΚΛΗΣΙΑ ΤΗΣ ΕΛΛΑΔΟΣ).

Russian Sources

• (in Russian) 5 июня (23 мая). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
• (in Russian) 23 мая (ст.ст.) 5 июня 2013 (нов. ст.). Русская Православная Церковь Отдел внешних церковных связей. (DECR).