Quadrelli has a Lombard strain, in western Lombardy and Piacentino, one in Carrarese and Lucchese, and one in the area that includes Bolognese, Ravenna, Forlivese, Rimini and Pesaro, Quadrello, absolutely rare, has a stump in Bari, could Derive from toponyms such as Quadrelli in Piacentino, Quatrelle in Mantano, or other names of localities, but in many cases it is more likely to derive from nicknames derived from the craft of the ancestor, which probably produced bricks or tiles, originated from Latin Medieval term quadrellus (brick), or from the word dialectal Lombard and Emiliano Quadrèll (brick) from the derivative.
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