Orthodox Saints of the Pre-Schism See of Rome
ADRIAN, a disciple of St. Landoald of Maastricht (vide infra), who was robbed and murdered, circa 668, whilst soliciting donations for his monastery near Maastricht, in present-day Holland. St. Adrian was subsequently venerated as a martyr, as he died in the service of his fellow monastics.
ALCMUND of DERBY (Alkmund, Ealhmund, Alhmund, Alchmund), the son of King Alhred of Northumbria (r. 765–774), and brother of King Osred II of Northumbria (r. 788–790). After years of exile amongst the Picts in Scotland St. Alcmund was martyred in Shropshire circa 800. His body was first interred at Lilleshult, in Shropshire, but was later translated to Derby, where he was patron of the town.
APOLLONIUS and LEONTIUS (LEONTINUS), traditionally thought to have been early Bishops of Braga in Portugal, with St. Leontius possibly the successor of St. Apollonius, though there is no information on their lives, or alleged martyrdoms extant.
AUXILIUS, a member of St. Patrick’s (17th March) mission to Ireland, and later Bishop of Killossey. The year of his repose is believed to have been circa 460. There is no other reliable information extant.
GEMUS, (Date Unknown), a monk, most likely at the Abbey of Saint Hidulf at Moyenmoutier in Vosges, Lorraine.
JOHN the SYRIAN of PINNA, (Sixth Century), a Syrian monk who, possibly fleeing persecution by Monophysites, settled in Pinna approximately 10 km / 6 mi south-west of Spoleto, Italy. After living as a hermit for a while, the local bishop blessed him to build a monastery which St. John served as abbot for forty-four years.
LACTAN, born near Cork in Ireland, according to tradition a miraculous spring provided the water for his Baptism. At the age of fifteen his Guardian Angel took him to St. Comgall (10th May) Abbot of Bangor. It is known with certainty that he did enter Bangor, and whilst there he studied under St. Lua (4th August). St. Lactan was then was appointed by St. Comgall to found several monasteries, presiding as founding Abbot of Achadh-Ur (present-day Freshford, Co. Kilkenny), until his repose in 672.
LANDOALD and AMANTIUS, St. Landoald, a priest, and St. Amantius, a deacon, were sent from Rome to enlighten the people of present-day Belgium and north-eastern France. They founded a church at Wintershoven, present-day Belgium as well. SS. Landoald and Amantius reposed circa 668 and were buried in what is now the Church of St. Peter’s Chains in Wintershoven.
LEONTIUS, a Bishop of Saintes, and a friend of St. Malo (15th November). St. Leontius provided refuge to St. Malo during the later's exile. St. Leontius reposed in 640.
QUINTUS, QUINTILLA, QUARTILLA, MARK, and COMPANIONS, (Date Uncertain), a group of approximately fourteen martyrs at Sorrento, near Naples. It is possible the three first were a brother and two sisters. However, there are no definitive facts available.
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”.
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.