Genealogy / THE MEANING AND RESEARCH OF MY POLISH LAST NAME, SURNAME? [4500]

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Blazejewicz - is it a common name?

hey my last name is Blazejewicz and im new to this site and was wondering if anyone can tell me how common my last name is in Poland and if anyone knows any information about it, all information will be great. Also i found a family crest and was wondering if this family crest would also be appropriate for my family as well (not really sure how family crests work)

thanks