In Romano-British religion, Cocidius was a deity worshipped in northern Britain. The Romans equated him with Mars, god of war and hunting, and also with Silvanus, god of forests, groves and wild fields.[1] Like Belatucadros, he was probably worshipped by lower-ranked Roman soldiers as well as by the Britons for whom he was probably a tribal god[2] - a genius loci.[3]