The Decian Persecution
The persecution under which Jadorus suffered was the first empire-wide, organized persecution of Christians. In late 249 the emperor Decius issued an edict requiring all inhabitants of the Roman Empire to perform a sacrifice before magistrates for the safety of the state, receiving a certificate (libellus) as proof of compliance. Christians who refused risked torture and execution.
The persecution lasted roughly eighteen months, until Decius's death in 251, and fell with particular severity at Carthage and Alexandria; among its most prominent victims was Pope Fabian of Rome. Jadorus and his companion Isidore belong to the many martyrs of this period whose names are remembered but whose detailed accounts have not survived.