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Last name Ruambua (Ruambua ) , across the world, is a very rare cognomen. The surname Ruambua is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruambua | Thailand |
Punika, Prasert, Premjai, Ladapha, Nathita, Pramualjit, and Chidchanok