Cloud of Witnesses
Martyr3rd century

Martyr Isidore Companion of Jadorus

Died c. 250 (3rd century)

Also known as Isidore · Martyr Isidore with Jadorus

A martyr put to death together with St. Jadorus in the persecution under the emperor Decius.

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Life

Isidore is a martyr of the third-century Decian persecution, remembered as the companion of the Martyr Jadorus. The Orthodox calendar preserves the two together, and almost nothing beyond their names and shared witness survives.

He is commemorated on February 4. The sources are careful to distinguish this Isidore from the Venerable Isidore of Pelusium, the monastic writer who is honored on the same date.

Timeline3 momentsReadHide
  1. 249Edict of DeciusEmperor Decius orders all inhabitants of the Roman Empire to sacrifice before magistrates and obtain a certificate of compliance, opening a persecution of Christians who refuse.
  2. c. 250MartyrdomIsidore is put to death together with the Martyr Jadorus during the Decian persecution.
  3. 251End of the persecutionThe persecution subsides after Decius dies in June 251.

Contributions & Legacy

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Historical Context

The martyrdom is placed in the reign of the emperor Decius (249–251). In late 249 Decius issued an edict requiring all inhabitants of the empire to offer sacrifice before local magistrates and to receive a signed certificate, the libellus, as proof of compliance. Christians who refused faced torture and execution.

The persecution lasted roughly eighteen months, until Decius died in June 251. Its prominent victims included Pope Fabian of Rome and Babylas of Antioch. Isidore and Jadorus belong to the far larger number of Christians of that persecution whose names alone have come down through the Church's commemoration.

Sources and the Limits of the Record

The principal witnesses to Isidore's commemoration are the OCA Lives of the Saints and the Eastern Orthodox liturgical calendars, including the entries drawing on Pravoslavie.ru and the Moscow Patriarchate calendar. These record only that he suffered martyrdom together with Jadorus under Decius.

No location, method of martyrdom, or personal background is preserved. Searches of OrthodoxWiki for both Jadorus and this Isidore return no dedicated article, confirming the scarcity of documentation. He is one of the most sparsely attested martyrs of the Decian persecution.

Companions1 figureShowHide
With whom he was put to death under Decius.
Martyr Jadorus
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Sources: OrthodoxWiki; OCA Synaxarion (oca.org), Feb 4