Very very rare it is typically Venetian, has a small stock in Cadore and one in Venice, it should derive from the dialect word calchera (lime kiln). additions provided by Fabio Paolucci Up to about sixty years ago the lime was produced in furnaces called locally calchere. The term calchera derives from the Latin calcaria fornax, meaning oven to produce lime and mortar. The calchera is an oven built with square stones, possibly resistant to heat. The place for its construction was chosen with care: it required the presence of a road for transport and a large availability of limestone and timber to fuel the fire. The surname Calchera would seem typical of the province of Belluno, of the municipality of Forno di Zoldo, but other stocks are found in Venice and its province as well as in Lombardy, Milan. Clearly the surname originates from the activity linked to the production of lime or toponymy, considering the fact that many places could be named in this way with specific reference to a nearby active calchera.
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