Orthodox Saints of the Pre-Schism See of Rome
ANASTASIA and BASILISSA (VASILISSA) of ROME, members of the Imperial Roman nobility, who were converted by the Apostles Peter and Paul (29th June). Following the Apostles martyrdom, SS. Anastasia and Basilissa secretly buried their bodies. When this came to the attention of the authorities, SS. Anastasia and Basilissa were arrested, brutally tortured, and finally beheaded, circa 68.
EUTYCHIUS of FERENTINO, (Date Unknown), a martyr in Ferentino in Roman Campagna.
HUNNA of ALSACE, the daughter of a duke and wife of a nobleman in Alsace (France), who devoted herself to serving the poor women of Strasbourg (Alsace, France). St. Hunna reposed in 679.
LAURENTINUS SOSSIUS, a five-year-old boy who was martyred on Good Friday in Valrovina near Vicenza (Italy) in 485.
MARO, EUTYCHES, and VICTORINUS of ROME, companions of St. Flavia Domitilla (12th May), whom they accompanied in exile to the Island of Pandataria (from the Ancient Greek Πανδατερία) in the Tyrrhenian Sea. They were later taken to Rome where they were martyred circa 99.
MUNDUS (MUNDE, MUND, MOND) , an Abbot of a great monastery in Argyle, Scotland. St. Mundus was known for leading a prayerful and austere life, and also admired for his zealous missionary work. He founded several monasteries in Argyle as well. St. Mundus reposed circa 962.
NIDGER (NIDGAR, NITGAR) of AUGSBURG, an Abbot of Ottobeuren in Bavaria (Germany), who then served as the sixteenth Bishop of Augsburg (Bavaria, Germany), from 822 until his repose circa 829.
PATERNUS (PADARN) of AVRANCHES, There are several saints named Paternus, and it is difficult to separate the various Lives and legends. It seems this St. Paternus was born in Brittany (France), studied in Ireland, and then went to Wales where he co-founded the monastery of Llanbadarn Fawr near Aberystwyth. It is probable that in later life he went to Normandy (France) where he was consecrated Bishop of Avranches. St. Paternus was known for his care of the poor as much as for the austerity of his life, and reposed circa 550.
PATERNUS (PERN) of VANNES, a late fifth century–early sixth century Bishop of Vannes in Brittany (France). As stated in the previous entry, it is almost impossible to untangle the lives of the several SS. Paternus.
RUADAN (RUADHAN, RODAN) of LORRHA, Another saint who is counted amongst the 'Twelve Apostles of Ireland', St. Ruandan was a leading disciple of St. Finian of Clonard (12th December). He founded the monastery of Lothra in North Tipperary, which grew to over one hundred and fifty monks under his leadership. English Roman Catholic priest and renowned hagiographer Fr. Alban Butler (†1773) states St. Ruandan was consecrated a bishop, though he mentions no See and there is no other record of consecration. St. Ruadan reposed in 584.
SILVESTER of RÉOME, an (possibly second) Abbot of the Abbey of Moutier-Saint-Jean of Réôme (abbaye de Moutiers-Saint-Jean) near Dijon in Burgundy (France) in the early seventh century St. Silvester reposed circa 625.
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.