Specific to western Sardinia, it originates from a nickname probably linked to the job of cowherd and derives from the Sassari word acca (cow). additions provided by Giuseppe Concas ACCA: Small-sized horse, nag, brocco. From the Catalan (h) aca (caball petit de estatura); Spanish Haca. It is not present in the ancient papers of Sardinia; evidently it is a surname that originated following the Spanish conquest of the island. Currently we find it in 54 Italian Municipalities, of which 25 in Sardinia, among which Bosa leads with 47; follow: Cuglieri 40, Santadi 38, Sassari 27, Cagliari 22, etc.
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