The notation Old Style or (OS) is sometimes used to indicate a date in the Julian Calendar (which is used by churches on the ii"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 passion of St. Theodora, sister of the illustrious martyr Hermes, who underwent martyrdom in the time of the emperor Adrian, under the judge Aurelian, and was buried by the side of her brother, on the Salarian road, a short distance from the city."[3]
"At Constantinople, under the emperor Leo, St. Macarius, confessor, who ended his life in exile for the defence of the honor paid to sacred images."[3]
The Irishmen Caidoc and Fricor evangelized the country of the Morini in Picardy, northern France, beginning about 622. Among the souls they won for Christ was the nobleman Riquier (Saint Ricarius), who intervened when some locals to offense to their preaching and took them into his home. Riquier became a fervent Christian, who engaged in penitential austerities and eventually was ordained. In 625, Riquier founded Centula based on the Rule of Columbanus, another Irishman. Their relics are still venerated at the parish church of Saint-Riquier in the diocese of Amiens, although they rested in Centula until the 17th century. Saints Caidoc and Fricor joined Riquier's community and remained there until they were buried in Saint Riquier's church.[16]
St. Pachomius was a Romanian bishop who was very devoted to the spirituality of St Paisius Velichkovsky and to the Saints of the Kiev Caves Lavra where he asked to spend his final days and as entombed at the Holy Dormition Lavra. He was glorified by the Romanian Orthodox Church in 2006 and his name was then added to the Ukrainian Orthodox Calendar.[28]
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.93.
Rev. Sabine Baring-Gould (M.A.). "S. Walaric Ab. of Leucony. (About A.D. 619.)." In: The Lives of the Saints. Volume the Fourth: April. London: John C. Nimmo, 1897. pp.3-6.
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.26.
April 1. 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.93.
(in Greek) Συναξαριστής. 1 Απριλίου. Ecclesia. (H Εκκλησια Τηε Ελλαδοσ).
Russian Sources
(in Russian)14 апреля (1 апреля). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).