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Family name Rumphasakul (Rumphasakul ) , all over the world, is a very rare cognomen. The family name Rumphasakul is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rumphasakul | Thailand |
Thirdsak, Saowaluk, and Natthathida