Martyrs Censorinus, Sabinus, Ares (Aares), the virgin Chryse (Chryse of Rome), Felix, Maximus, Herculianus, Venerius, Styracius, Mennas, Commodus, Hermes, Maurus, Eusebius, Rusticus, Monagrius, Amandinus, Olympius, Cyprus, Theodore the Tribune, the priest Maximus, the deacon Archelaus, and the bishop Cyriacus, at Ostia,[1][3]– under Roman Emperor Claudius Gothicus and a vicarius named Ulpius Romulus (269)[7][8][note 3] (see also August 13 - Hippolytus of Rome - who may or may not be the same individual)
Saint Savina of Milan (Sabina), born in Milan, she ministered to martyrs in prison and buried their bodies during the persecution of Diocletian (311)[6][16]
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 Antioch, the passion of the blessed priest Hippolytus, who, for a short time deceived by the Novatian schismatics, was converted by the grace of Christ and returned to the unity of the Church, for which and in which he afterwards underwent a glorious martyrdom. Being asked by the schismatics which was the better side, he repudiated the doctrine of Novatus, and affirming that the faith ought to be professed which the Chair of Peter taught, he presented his neck to the executioners."[6]
"HIPPOLYTUS (St.) M. (Jan. 30). A Syrian Christian, a priest, converted from the errors of Novatus and afterwards put to death for the Faith at Antioch, some time subsequent to a.d. 250."[9]
Born in England, she was sold as a slave to the mayor of the palace of the Kingdom of Neustria. In 649 King Clovis II married her and she became the mother of three future kings. After her husband's death, she was regent of France (656-664). When Clotaire III came of age, she became a nun at the convent of Chelles which she had founded.
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.30–32.
"HIPPOLYTUS (St.) M." In: The Benedictine Monks of St. Augustine's Abbey, Ramsgate (Comp.). THE BOOK OF SAINTS: A Dictionary of Servants of God Canonised by the Catholic Church: Extracted from the Roman & Other Martyrologies. London: A. & C. Black, Ltd., 1921. p.137.
The Autonomous Orthodox Metropolia of Western Europe and the Americas (ROCOR). St. Hilarion Calendar of Saints for the year of our Lord 2004. St. Hilarion Press (Austin, TX). p.11.
The Autonomous Orthodox Metropolia of Western Europe and the Americas (ROCOR). St. Hilarion Calendar of Saints for the year of our Lord 2004. St. Hilarion Press (Austin, TX). p.11.
January 30. 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.30–32.
(in Greek) Συναξαριστής. 30 Ιανουαρίου. ECCLESIA.GR. (H ΕΚΚΛΗΣΙΑ ΤΗΣ ΕΛΛΑΔΟΣ).
Russian Sources
(in Russian)12 февраля (30 января). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).