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Cognomen Siwasan (Siwasan
, ศรีวสันต์
) , in all the world, is an extremely rare last name. The last name Siwasan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, Siwasan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siwasan | India, Thailand |
| ศรีวสันต์ | Thailand |
Kanhari, Nuprasert, Pongsukrit, Visetchoke, Thanakornphtpatthana, and Thanakornphipatthana