Vassura is specific to Ravenna, of Ravenna, Faenza, Alfonsine, Lugo and Russi, Vassuri, much rarer, is also of Ravenna, of Russians in particular, Vasuri is almost unique, they should derive from the medieval name Vasura, of Gothic origin, or by the name Vaxur Used in Pannonia and perhaps brought to Italy by a legionnaire originating from that region.
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