... Several inscriptions in honour of Mars Cocidius have been found in this country; but the meaning of the word Cocidius is unknown, as well as that of a related form Cocosus, which also occurs...
... possibly the application to Silvanus of the adjective Cocidius, usually reserved for the Celtic war-god, was meant to describe a god more closely resembling Thor in his more warlike moods, a Silvanus such as that described by Livy, Hist. Rom. ii. 7, driving the Sabines to flight by the terrifying voice he caused to issue from the forest of Arsia after a contest between the Romans and Tarquin.  The designation Silvanus Cocidius occurs in a dedication at Housesteads on the Roman Wall, and it is noteworthy that it was set up by the prefect of a cohort of Tungrians; but the fact does not prove the god to have been Teutonic: witness the Germas who honoured the Celtic god Maponos in an inscription at Ainstable near Armthwaite. (Hibbert Lectures, 1888).