The Martyr Caesarius the Deacon suffered martyrdom for Christ with St Julian the Presbyter at Terracina, Italy in the first century.
StCaesarius was thrown into prison for insulting the pagan gods. They later took him in bonds to the temple of Apollo, but before they got him near the pagan temple it collapsed, killing the pagan priests and many of the people.
About the same time the idolators arrested the Christian priest Julian. At the empreor’s orders, the holy martyrs were cast into the sea, but their bodies floated to the surface, and Christians buried the sufferers.
The relics of St Caesarius are kept in Rome.