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Last name Siwongsa (ศรีวงษา , Siwongsa , สีวงษ์สา ) , all around the world, is quite a rare surname. The cognomen Siwongsa is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname.
VARIANT | COUNTRY |
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ศรีวงษา, สีวงษ์สา, Siwongsa | Thailand |
Yotnamporn, and Nawaporn