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Cognomen Rabtsau (Rabtsau
) , throughout the world, is an extremely rare surname. The cognomen Rabtsau is habitual in Northern America, particularly Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rabtsau | United States, Canada |
Artsem, Aleksander, and Aliaksandr