It seems to have two stocks, in the north of Milan and Como and in Valtellina, it derives from the toponym Caspano (SO), traces of this surname can be found, for example, in 1500 with a certain Stefano fu Tognij Betoni de Caspano di Grosio who appears in a sale deed of some lands, in the 1600 the cognominizzazione is perfected with for example a Martino Caspanus mayor of the contrada Viale di Grosio (SO). additions provided by Giacomo Ganza / Villa di Tirano (SO) The surname is present in some provinces of Lombardy, including Milan. It derives from the toponym Caspano, a fraction of the municipality of Civo (SO). In the province of Sondrio the Caspani are present above all in Grosio and Mazzo in Valtellina, altogether just under a hundred families. The Caspani settled in Grosio during the 1400s, becoming the protagonists of the life of the village in the following centuries.
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