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Four groups of Christians who suffered for the faith at Nicomedia, in Asia Minor, in modern Turkey.

(d.c. 300) A band of ten thousand martyrs, slain at the command of Emperor Diocletian, in revenge for a fire which devastated the imperial palace of Nicomedia. Feastday: March 18 (d.c. 303) Possibly twenty thousand martyrs burned alive in the great Christian basilica of the city during the Christmas celebrations. Precise historical documentation for the event is scant. Feastday: December 25 (d.c. 303) A large group of perhaps twenty thousand martyrs who were hunted down by imperial authorities at the command of Emperor Diocletian. They were one-time residents of Nicomedia who had fled to caves in the wilderness. Feastday: March 18


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