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Cognomen Ruensuwan (Ruensuwan ) , in the world, is a very rare family name. The cognomen Ruensuwan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruensuwan | Thailand |
Somjit, Boriphan, Natwarum, Thiraporn, and Watchrapong