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Cognomen Benjasiriwat (Benjasiriwat ) , all over the world, is a very rare surname. The last name Benjasiriwat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Benjasiriwat | Thailand |
Wiwat, Tanupat, Walaiporn, and Chalermkwan