Campa is typically Apulian, of Salento in particular, Campi is widespread throughout the north, especially in the Milanese and Varese regions, in the Genoese, Ferrara and Umbria regions, Campo is typically Sicilian with strains also in the Belluno area and in Puglia, Della Campa, very rare , is of the Neapolitan, Lo Campo is specific to Foggia, they should all derive from one of the many toponyms called Campa, Campi or Campo or compounds with the word Campi or Campo, we have an example of this use in this paper of 1257: ". ..Nam ex parte mei, domui iam dicte pacis causa, propter ecut salutem mee souls, de consensu fratris mei Sandivogii et filioli me Nycolai filii Sandivogii de Campa, villas istas, ... ". We find traces of these surnames in the Pisan language in 1200: "... Bonaventure de Ceuli quondam Campi de S. Iohanni alla Vena (San Giovanni alla Vena (PI)) ...", in Valtellina in 1600 with notary Antonio Campi collector of foreign sizes in the community of Grosio (SO).
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