April 9 (Eastern Orthodox liturgics)

• Martyrs Fortunatus, Donatus, twelve virgins, and six laymen, at Sirmium (304)[1][2]
• Martyr Eupsychius of Caesarea in Cappadocia (362)[1][3][4][5][note 2]
• Hieromartyrs Desan the Bishop, the Priest Mariabus, Martyr Abdiesus and 270 others, martyrs of Persia under Shapur II (362)[1][7][8]
• Venerable Hieromartyr Bademus (Vadim), Archimandrite, of Persia, and 7 disciples (379)[1][9][10]
• Venerable Acacius of Amida, Bishop of Amida in Mesopotamia (5th century)[1][11][note 3]

• Martyrs of Pannonia, seven virgin-martyrs in Sirmium in Pannonia.[12][13][note 4]
• Martyrs of North-West Africa, a group of Christians martyred in Masyla.[12][note 5]
• Saint Marcellus, Bishop of Die, celebrated for miracles (474)[6][12][note 6]
• Saint Madrun (Materiana), a saint from Wales or Cornwall to whom some Welsh churches are dedicated (5th century)[12]
• Saint Dotto, Abbot of a monastery in the Orkney Islands off the coast of Scotland (6th century)[12][14]
• Saint Waltrude (Woutruide, Waldetrudis, Vaudru), monastic foundress at Bergen (Netherlands), renowned for holiness of life and miracles (688)[1][2][6][12][15][16][note 7]
• Saint Hugh of Rouen (Hugh of Champagne), Bishop of Rouen and then of Paris, and was also Abbot of Fontenelle and Jumièges (730)[6][12]
• Saint Hedda and Companions, Abbot of Peterborough in England, martyred by the Danes (869)[12][17][note 8]
• Saint Theodore and Companions, Abbot of Crowland in England, martyred by the Danes (869)[12][17][note 9]
• Saint Casilda of Toledo, an anchoress near Briviesca near Burgos (1050)[12][note 10]

• Newly Revealed Martyrs Raphael (Archimandrite), Nicholas (Deacon), Irene (child), and Eleni (who was also called Susanna) of Lesbos, and those with them (1463)[1][2][18][19][20][21][note 11]
• Hieromartyr Misael, Archbishop of Ryazan and Murom (1655)[1][note 12]

• Translation of the holy relics of Saint Monica of Tagaste to Rome.[23][note 13]

• 
  St Bademus (Little Pictorial Lives of the Saints, 1878)
• 
  St Materiana depicted on the church banner at Minster, Cornwall.
• 
  St. Waltrude and family.
• 
  Saint Hugh of Rouen.
• 
  St Casilda of Toledo (Catedral de Burgos)
• 
  Saints Raphael, Nicholas and Irene of Lesbos.
• 
  Hieromartyr Misael, Archbishop of Ryazan and Murom.
• 
  St Monica and Saint Augustine (by Olle Hjortzberg).

• April 9 / April 22. Orthodox Calendar (pravoslavie.ru).
• April 22 / April 9. Holy Trinity Russian Orthodox Church (A parish of the Patriarchate of Moscow).
• April 9. OCA - The Lives of the Saints.
• The Autonomous Orthodox Metropolia of Western Europe and the Americas. St. Hilarion Calendar of Saints for the year of our Lord 2004. St. Hilarion Press (Austin, TX). p. 27.
• April 9. Latin Saints of the Orthodox Patriarchate of Rome.
• The Roman Martyrology. Transl. by the Archbishop of Baltimore. Last Edition, According to the Copy Printed at Rome in 1914. Revised Edition, with the Imprimatur of His Eminence Cardinal Gibbons. Baltimore: John Murphy Company, 1916. p. 100.
• Rev. Richard Stanton. A Menology of England and Wales, or, Brief Memorials of the Ancient British and English Saints Arranged According to the Calendar, Together with the Martyrs of the 16th and 17th Centuries. London: Burns & Oates, 1892. pp. 150–151.

Greek Sources

• Great Synaxaristes: (in Greek) 9 Απριλίου. Μεγασ Συναξαριστησ.
• (in Greek) Συναξαριστής. 9 Απριλίου. ecclesia.gr. (H Εκκλησια Τησ Ελλαδοσ).

Russian Sources

• (in Russian) 22 апреля (9 апреля). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
• (in Russian) 9 апреля (ст.ст.) 22 апреля 2013 (нов. ст.) Archived 2014-02-22 at the Wayback Machine. Русская Православная Церковь Отдел внешних церковных связей.