[cf. W coch, red].
A god worshipped in early Britain, especially in the north and west, whom the Romans compared with Mars. He is sometimes represented as wearing a shawl or hood while at other times, in north Britain, he appears to have horns (cf. horned god) and is associated with hunting. His shrine at Bewcastle, Cumberland, implies that he was a soldier's god. Cocidius may be identical with Segomo, the war-god of the Continental Celts, and he may be associated with Teutates [the ruler of the people], who was worshipped in Britain. Even more tentatively, Cocidius may be associated with Belatucadros [fair, shining one] and Mogons [the powerful one].
See D. B. Charlton and M. M. Mitcheson, ‘Yardhope, a Shrine to Cocidius?’, Britannia, 14 (1983), 143–53.