Sardi is present in Liguria, Piedmont, Tuscany and Lazio, Sardinian is typical of Campania, Sicily, Liguria and Piedmont, Sardone has a large strain in Puglia, particularly in the Barese, in Basilicata, especially in the Materano, and has a small strain in Sicily, Sardoni, Extremely rare, it would appear to be Roman, they should derive, directly or through accreitive, from the ethnic Sardinian (inhabitant of Sardinia), to indicate probably that the families originated from that island.
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