On reading that report about Tommy Peoples having his fiddle stolen with two medals of St Martin in the case, I couldn't help making a guess as to why. (He specializes, inter alia, in alcoholics; I know nothing whatever about Peoples's personal life but booze is one of the major occupational hazards of the folk music industry).

The first saint's medal I ever saw was one of St Christopher. It was lying in a pile of debris after a car crash.