Quiriacus was

Bishop of Ostia The Roman Catholic Suburbicarian Diocese of Ostia is an ecclesiastical territory located within the Metropolitan City of Rome in Italy. It is one of the seven suburbicarian dioceses. The incumbent Bishop is cardinal Giovanni Battista Re. Since ...

, and suffered

martyrdom A martyr (, ''mártys'', "witness", or , ''marturia'', stem , ''martyr-'') is someone who suffers persecution and death for advocating, renouncing, or refusing to renounce or advocate, a religious belief or other cause as demanded by an externa ...

during the reign of Emperor Severus Alexander. Quiriacus was martyred along with Maximus, his

priest A priest is a religious leader authorized to perform the sacred rituals of a religion, especially as a mediatory agent between humans and one or more deities. They also have the authority or power to administer religious rites; in partic ...

, and Archelaus, a

deacon A deacon is a member of the diaconate, an office in Christian churches that is generally associated with service of some kind, but which varies among theological and denominational traditions. Major Christian churches, such as the Catholic Chur ...

.St. Quiriacus
Catholic Online

References

235 deaths Italian Roman Catholic saints 3rd-century Christian martyrs Year of birth unknown {{Italy-saint-stub