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Cognomen Weglarz (Weglarz
) , in all the world, is quite a rare surname. The cognomen Weglarz is habitual in Poland, where it is quite a rare surname, the United States, where it is a rare surname, and Ireland. Measured by absolute frequency, the name is most common in Poland, the United States, and Germany. More frequently, Weglarz is the forename as well as the last name.