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Cognomen Thammasuwan (ธรรมสุวรรณ , Thammasuwan
) , all around the world, is a rare family name. The cognomen Thammasuwan is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| ธรรมสุวรรณ, Thammasuwan | Thailand |