^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 Alexandria, in the same persecution of Severus, the holy martyrs Plutarch, Serenus, Heraclides, catechumen, Heron, neophyte, another Serenus, Rhais, catechumen, Potamiœena and Marcella, her mother. Among them, the virgin Potamiœna is particularly distinguished. She first endured many most painful trials for the preservation of her virginity, and then cruel and unheard-of torments for the faith, after which she and her mother were consumed with fire."[5]
^"At Lyons, in France, St. Irenaeus, bishop and martyr, who, as is related by St. Jerome, was the disciple of blessed Polycarp, bishop of Smyrna, and lived near the time of the Apostles. After having strenuously opposed the heretics by speech and writing, he was crowned with a glorious martyrdom, with almost all the people of his city, during the persecution of Severus."[5]
^"The same day, during the persecution of Diocletian, St. Papius, martyr, who was scourged with knotted cords, cast into a caldron of seething oil and grease, and after other horrible torments, was decapitated, and thus won an eternal crown."[5]
^A disciple of St Mewan or Mevan of Cornwall. He probably lived in the area where the place-name preserves his memory.
^"Little or nothing is known of this saint, except that she was a daughter of Clovis, king of the Franks; and that she obtained from him a grant of lands at Sens, where she founded the convent of S. Pierre-le-Vif, into which she retired, and where she died."[24]
^Born in Cabra near Cordoba in Spain, he held a high position among the Muslims of the city. He was deprived of his office on account of his faith and became a monk. Shortly afterwards he openly renounced Islam, confessed Christ and was beheaded.
^"At Cordova, St. Argymirus, monk and martyr, who was slain for the faith of Christ during the persecution of the Arabs."[5]
^The Damascene Icon of the Mother of God, by ancient tradition, was painted by St John of Damascusin gratitude to the Theotokos for the miraculous healing of his right hand, cut off through the perfidy of Emperor Leo the Isaurian. This icon is also known as "Of the Three Hands" Icon of the Mother of God (June 28, and July 12).
^ abc(in Greek)28 ΙουνίουArchived 2018-06-12 at the Wayback Machine. Αποστολική Διακονία της Εκκλησίας της Ελλάδος (Apostoliki Diakonia of the Church of Greece).
^Rev. Sabine Baring-Gould (M.A.). "SS. PLUTARCH, POTAMIÆNA, AND OTHERS, MM. (A.D. 202.)." In: The Lives of the Saints. Volume the Sixth: June. London: John C. Nimmo, 1897. pp. 410-412.
^ abcdeThe 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. 187-188.
^ abcdefghijJune 28Archived 2018-06-12 at the Wayback Machine. The Year of Our Salvation - Holy Transfiguration Monastery, Brookline, Massachusetts. Retrieved: 11 June 2018.
^(in Russian)ВАСИЛИЙ. Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
^(in Russian)ГРИГОРИЙ. Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
June 28. The Year of Our Salvation - Holy Transfiguration Monastery, Brookline, Massachusetts.
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). pp. 47–48.
June 28. 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. 187–188.
(in Russian)11 июля (28 июня). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).