Pambianco seems to be specific to the Marche, Umbria and Lazio areas with a maximum concentration in the Perugia area, Panbianco is absolutely rare, Panebianco is very common in the south, particularly in Sicily, Calabria and Puglia, Panibianchi is unique, all these surnames should derive from the late medieval name Panis to which the addition of white gives a greater value of goodness, they all fall within the large family of auspicious names attributed to the progenitors.
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