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Cognomen Wiersum (Wiersum
) , globally, is a rare surname. The cognomen Wiersum is habitual in Western Europe, particularly Netherlands, where it is quite a rare surname, Belgium, where it is a rare surname, and Austria. Not in comparison with a country's population, it is commonest in Netherlands, the United States, and Belgium.
| VARIANT | COUNTRY |
|---|---|
| Wiersum | Netherlands, Belgium, Austria, United States, Germany |