Saint Patroclus (Patroccus; French: Parre, German: Patroklus) of Troyes was a Christian martyr who died around 259 AD.

His parents had left him a substantial estate just outside the city, where he led a pious Christian life.

When Patroclus refused to worship the Roman gods, the emperor ordered him taken to water and there beheaded, so that his body might not rest in peace on dry land.

Then Eusebius, the archpriest of that place, and the deacon Liberius came by night, wrapped the body in linen, and buried it discreetly.

In art, Patroclus is depicted as a warrior pointing to a fish with a pearl in its mouth, often invoked against demons and fever.