Orthodox Saints of the Pre-Schism See of Rome
20th September
CANDIDA of CARTHAGE, according to the Roman Martyrology, St. Candida was martyred in Carthage during the Diocletianic Persecution (303–313) by order of co-Emperor Maximian (r. 286–305). However, according to the pre-eminent hagiographic scholars of the Société des Bollandistes (the Bollandists), there is a compelling argument for doubting the veracity of the primary source documents upon which the date of her martyrdom is predicated.
EUSEBIA of MARSEILLE, Abbess of the Abbey of St. Cyr (abbaye Saint-Cyr) in Marseille (south-eastern France). St. Eusebia, along with an estimated forty other nuns, was martyred by the Saracens. There are various years recorded for their martyrdom ranging from the sixth century to ninth century.
EUSTACE of ROME, THEOPISTES of ROME, AGAPITUS of ROME, and THEOPISTUS of ROME, according to tradition SS. Eustace, an officer; Theopistes, his wife; and their sons Agapitus and Theopistus were a Roman family of some distinction. All of whom are reported to have been cooked to death, in the persecution of Christians during the reign of the Emperor Hadrian (r. 117–138).
GLYCERIUS of MILAN, seventeenth Archbishop of Milan (north-west Italy) from 436 until his repose circa 438. Very little is known of the life of St. Glycerius beyond he was a deacon in Milan before his election as Archbishop and possibly a tutor of the Western Roman Emperor, Valentinian III (r. 425–455).
VINCENT MADELGAIRE (MADELGARUS), St. Vincent Madelgaire was the husband of St. Waldetrudis of Mons (9th April), with whom he had four children, all of whom became saints: Landericus of Soignies (10th June), Dentlin of Soignies (16th March), Madalberta (7th September), and Aldetrudis (25th February). Around the year 653, SS. Waldetrudis and Vincent mutually decided to enter monasteries, with St. Vincent receiving tonsure at Hautmont Abbey (abbaye de Haumont), in Hautmont (northern France) of which he was the founder. He later served as Abbot of Hautmont, and circa 670 St. Vincent founded a monastery on his estate at Soignies in Hainaut (Belgium) where he reposed in 677.
Prior to the Schism the Patriarchate of Rome was Orthodox, and fully in communion with the Orthodox Church. As Saint John of Shanghai and San Francisco +1966 said “The West was Orthodox for a thousand years, and her venerable Liturgy is far older than any of her heresies”.
Details of British Saints excerpted from Orthodox Saints of the British Isles.
Details of continental saints from these sources.
In many cases there are several spelling versions of the names of saints from the British Isles. I use the Oxford Dictionary of National Biography version as the primary version with the more prevalent version in parenthesis e.g. Ceadda (Chad) of Lichfield.