Lamastra, absolutely rare, is in the area between Potentino and Bari, La Mastra, more widespread, has a small stock in Molfetta in the Bari area and a more consistent one in Catania in Raddusa, Ramacca, Catania and Trecastagni, should be matronymics referring to progenitors that by profession they were teachers, the term mastra would indeed be a teacher, since it is an archaic dialectal form of the medieval magistra term.
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