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Family name Plengkham (Plengkham ) , all over the world, is a very rare cognomen. The cognomen Plengkham is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Plengkham | Thailand |
Ohm, Araya, Amorn, Thanes, Siripawee, Pornchai, Juraiwan, Chedsadanon, and Phanthakarn