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Cognomen Ongkasing (Ongkasing ) , in the entire world, is a very rare family name. The cognomen Ongkasing is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
VARIANT | COUNTRY |
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Ongkasing | Thailand |
Pairoj, Natcha, Namkang, Chatwarun, Dolchanok, Chatphathai, Chuleeporn, and Hathaichat