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Cognomen Yiansong (Yiansong ) , globally, is a very rare last name. The family name Yiansong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yiansong | Thailand |
Duanhgchai, Premrat, Duangchai, and Charoempon