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Last name Vaidhayakarn (Vaidhayakarn ) , in the entire world, is a very rare family name. The cognomen Vaidhayakarn is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Vaidhayakarn | Thailand |
Prose, Pisamai, Pidhyasak, Chawapich, Pidhayasak, Thitiwat, and Preedaporn