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Cognomen Sawangthaisong (Sawangthaisong ) , all over the world, is a very rare surname. The surname Sawangthaisong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sawangthaisong | Thailand |
Niwat, Nidjaporn, Chaowalit, and Rattanaphon