
Orthodox Saints of the Pre-Schism
See of Rome
1st April (NS) — 19th March (OS) 2025
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.

Sarcophagus of St. Alkmund
Derby Museum and Art Gallery, Derby, UK
Photo Credit: Kelly — CC BY-SA 3.0
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.
Get your copy of Orthodox Saints of the British Isles today.
Available at Amazon or your favourite e-bookstore.
CAIDOC and FRICOR (ADRIAN), two seventh century Irish missionaries, who went to north-eastern Gaul where they evangelised the Morini tribesmen. SS. Caidoc and Fricor’s mission was extremely fruitful, and amongst those brought to Christ was St. Richardius (26th April).
CELLACH (CEILACH, KEILACH, CELLACH mac SÓERGUSSA), (Ninth Century), a member of the re-founding group of the Abbey of Kells, Co. Meath, Ireland, prior to his elevation to the See of Armagh. Whilst in his Acta Sanctorum Hiberniae the noted hagiographer and historian John Colgan O.F.M. (†c. 1657) numbers at least thirty-three Celtic saints named Cellach or Ceilach, it is most likely that this St. Cellach was an Abbot of Iona, prior to his consecration as Bishop of Armagh.
DODOLINUS, (Seventh Century), the thirty-seventh Bishop of Vienne in south-eastern present-day France.
TEWDRIG ap TEITHFALLT, Welsh king who abdicated in favour of his son, to live as a hermit. Martyred during a Saxon invasion in 630.
THEODORA, the sister of St. Hermes (28th August) to whom she provided material and emotional support during St. Hermes imprisonment and torture. The Acta of Pope St. Alexander I (3rd May) state that St. Theodora also buried St. Hermes (28th August) following his martyrdom. St. Theodora, herself, was martyred soon after. SS. Theodora and Hermes were buried side by side, circa 125.
VENANTIUS, a bishop in the Dalmatia region of present-day Croatia. St. Venantius along with several companions, was martyred in the mid- third century.
VALÉRY (GUALARIC, WALERICUS) of LEUCONE, a monk at the Abbey of SS. Peter and Paul of Luxeuil (abbaye Saint-Pierre et Saint-Paul de Luxeuil), who went on to found the Abbey of Leuconay at present-day Saint-Valery-sur-Somme, France. St. Valéry reposed circa 622.
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.