Panarone, absolutely rare, would appear to be Neapolitan, Panaroni is typical of the Fano, Pesaro and Piagge of Pesaro, Paneroni is typical of the Brescia area, of Rudiano and Roccafranca, should derive from nicknames originating from the ancestor's trade, most likely a panaro or
Buy a heraldic document with your coat of arms
Verba Volant, Scripta Manent