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Cognomen Roysen (Roysen
) , all around the world, is a very rare family name. The last name Roysen is characteristic of Norway, where it is a very rare surname, New Zealand, and Argentina. Measured by absolute frequency, it is commonest in India, Brazil, and Argentina. Likewise, Roysen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Roysen | Suriname, Philippines, Brazil, India, South Africa |