Calliopius
Martyrological notice
The historical Roman Martyrology commemorates Calliopius on 7 April. The Latin notice identifies the record as martyr. The source places the commemoration at In Cilicia.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
In Cilicia sancti Calliopii Martyris, qui, sub Maximiano Praefecto, post alia tormenta, capite in terram verso cruci affixus, nobili corona martyrii decoratus est.