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Last name Fangsuwan (Fangsuwan ) , in the world, is a very rare cognomen. The surname Fangsuwan is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Fangsuwan | Thailand |
Manu, Kajohn, Sirawit, Puwanai, and Supamongkol