Santomartino has a log in Naples, Portici and Casoria and Montemurro in the Potentino, could derive from the name of one of the many countries registered in San Martino, also present in Campania and Basilicata, probable place of origin of the founder, even if It cannot be excluded that it can derive from the fact that the founder brought the name double formed by the name Saint and the name Martino.
Buy a heraldic document with your coat of arms
Verba Volant, Scripta Manent