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Family name Thummanusarn (Thummanusarn ) , all over the world, is a very rare cognomen. The cognomen Thummanusarn is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thummanusarn | Thailand |
Supat, Chorfah, Nutchaya, Yamonporn, and Thanachote