Holy Martyr Markellos.
May 22
The synaxarion honors the martyr Markellos on May 22, recording only that he gave his life for Christ. The place of his martyrdom is not preserved.
He is commemorated together with Saint Basiliskos.
July 18
St. Markellos is commemorated as a martyr who confessed Christ during the persecutions. Tradition relates that he died by fire.
His name is kept in the Synaxarion among the martyrs of this day.
Feast day
On the New Calendar, Markellos the Martyr is commemorated on May 22. Churches on the Old (Julian) Calendar keep the feast on June 4 of the civil calendar.
On the New Calendar, Markellos the Martyr is commemorated on July 18. Churches on the Old (Julian) Calendar keep the feast on July 31 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Also commemorated on May 22

Fathers of the Second Ecumenical Council
Saint, Πατέρες της Β' Οικουμενικής Συνόδου
Commemoration of the Holy Fathers of the Second Ecumenical Council at Constantinople.
Paul the Peloponnesian
Martyr, Παύλος ο Πελοποννήσιος
Venerable Martyr Paul of Aroania, an Athonite monk beheaded at Tripolis.
Sophia the Physician
Holy Woman, Σοφία η Ιατρός
Venerable Sophia the Physician, who healed the sick and served the poor.
John Vladimir of Serbia
Saint, Ιωάννης Βλαδίμηρος
Holy King John Vladimir of Serbia, wonderworker, beheaded by treachery.
Zacharias of Prousa
Hierarch, Ζαχαρίας ο Νέος Προύσης
Hieromartyr Zacharias the New of Prousa, a priest beheaded for returning to Christ.