As was standard practice, as revealed by inscriptions, the Romans matched their deities with local Silurian ones, and the local deity Ocelus was identified with Mars, the Roman god of war.
Mars Lenus was a god of the Treveri with great cult centres at Trier and Pommern; Ocelus was a local British deity, to whom another stone was inscribed at Caerwent, and who was also worshipped at Carlisle.