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|Sorry, we couldn't find geographic distribution information for the Porro last name|
You can see how Porro families moved over time by selecting different Census years.
from the New York Passengers List
The information for this chart came from the U.S. Immigration Collection at Ancestry. You can find out where the majority of the Porro families were living before they immigrated to the U.S and learn where to focus your search for foreign records.