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Family name Ruengkasem (Ruengkasem
, เรืองเกษม
) , globally, is a rare cognomen. The family name Ruengkasem is characteristic of Thailand, where it is a rare surname, and Australia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruengkasem | Australia, Thailand |
| เรืองเกษม | Thailand |