Obadiah. See Abdias.
Oceanus of Sebastia, Martyr. Nov. 2.
Oceanus, Martyr. Sept. 12.
Octavian, Archdeacon of Carthage, Martyr. Mar. 22.
Olbian, Bishop of Aneus, Martyr. May 29.
Olbian, Righteous. May 25.
Olda (Huldah), Prophetess. Apr. 10.
Oleg, Great Prince of Bryansk, Righteous. Sept. 20.
Olga, Grand Duchess of Russia, New Martyr. July 4.
Olga, Great Princess of Kiev, Equal to the Apostles. July 11.
Olga, New Righteous Martyr in Russia. Sunday Nearest Jan. 25.
Olive (Olivia) of Brescia, Virgin Martyr. Mar. 5.
Olympas, Apostle, of the 70. Nov. 10, Jan. 4.
Olympiades of Persia, Martyr. Oct. 7.
Olympias of Karyes, New Righteous Martyr. May 11.
Olympias the Deaconess, Righteous. July 25.
Olympiodora, Martyr. Dec. 31.
Olympius of Ostia, Martyr. Jan. 30.
Onesimus of the Kiev Caves. Oct. 4, July 21, Sept. 22‒28.
Onesimus the Wonderworker of Caesarea in Palestine. July 14.
Onesimus, Apostle. Feb. 15, Nov. 22, July 6.
Onesimus, Archbishop of Ephesus. Dec. 1.
Onesiphorus of the Kiev Caves. Nov. 9, Sept. 22‒28.
Onesiphorus, Apostle, of the 70. Sept. 7, Dec. 8, Jan. 4.
Onesiphorus, Martyr (with Porphyrius). Nov. 9.
Onuphrius of Garedja in Georgia, Righteous. Sept. 29.
Onuphrius of the Kiev Caves. July 21, Sept. 22‒28.
Onuphrius of Maly, Righteous. June 12.
Onuphrius of Vologda, Righteous. June 12.
Onuphrius the Great of Egypt. June 12.
Onuphrius, New Righteous Martyr in Chios. Jan. 4.
Oprea of Salistie, Martyr. Oct. 21.
Optatus of Saragossa, Martyr. Apr. 16.
Synaxis of the New Martyrs and Confessors of. Nov. 12.
Synaxis of the Righteous Fathers of. Oct. 10.
Or (Hur) the Priest. Sunday Before Nativity.
Or of Egypt, Righteous. Aug. 7.
Or, Martyr. Aug. 22.
Oraiozela, Martyr. July 26.
Orentius of Anatolia, Martyr. June 25.
Orestes of Cappadocia, Martyr. Nov. 10.
Orestes of Greater Armenia, Martyr. Dec. 13.
Orion, Martyr. Nov. 10.
Oropsis, Martyr. Aug. 22.
Orsiesius (or Horsiesius) of Tabennisi, Righteous. June 15.
Oscar. See Anskar.
Ostrychius of Melitene, Martyr. Nov. 7.
Oswald, King of Northumbria, Martyr. Aug. 5.
Oswin, King of Northumbria, Martyr. Aug. 20.
Otari of Garedja in Georgia, Righteous Martyr. Aug. 12.
Ouen, Owen. See Audoenus.
Oyend (Eugendus), Abbot of Condat in Gaul. Jan. 1.
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