Saint Gabinus, a martyr in Rome who was related to the Emperor Diocletian, but also the brother of Pope Gaius, and father of the martyr St Susanna (c. 295)[17][18][note 2]
The notation Old Style or (OS) is sometimes used to indicate a date in the Julian Calendar (which is used by churches on the "Old Calendar"). The notation New Style or (NS), indicates a date in the Revised Julian calendar (which is used by churches on the "New Calendar").
"AT Rome, the birthday of St. Gabinus, priest and martyr, brother of the blessed pope Caius. Being loaded with chains and kept a long time in prison by Diocletian, he obtained the joys of heaven by a precious death."[19]
The Cyprus Icon of the Mother of God. In this icon the Mother of God is depicted sitting on a throne with the Divine Infant in Her arms. There is an angel on either side of Her. The prototype of this holy icon manifested itself in the year 392 on the island of Cyprus at the tomb of Righteous Lazarus, the friend of Christ (October 17), and is kept there in a monastery. Renowned copies of the Cyprus Icon are at the Moscow’s Dormition Cathedral, and in the Nikolo-Golutvin church in the village of Stromyn, Moscow diocese (Commemorated on the Sunday of Orthodoxy). Other days commemorating the Cyprus Icon are the Day of the Holy Spirit, April 20, and July 9. Some copies of the Cyprus Icon have additional names such as "Cleansing," "Knife," and "Hawk."
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. pp.52-53.
Rev. Sabine Baring-Gould (M.A.). "S. Barbatus of Benevento, B. C. (A.D. 682.)." In: The Lives of the Saints. Volume the Second: February. London: John C. Nimmo, 1897. p.342-343.
Rev. Sabine Baring-Gould (M.A.). "S. Mansuetus of Milan, B. C. (After A.D. 680.)." In: The Lives of the Saints. Volume the Second: February. London: John C. Nimmo, 1897. p.341-342.
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.16.
February 19. 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. pp.52-53.
(in Greek) Συναξαριστής. 19 Φεβρουαρίου. Ecclesia.gr. (H Εκκλησια Τησ Ελλαδοσ).
Russian Sources
(in Russian)4 марта (19 февраля). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).