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Surname คำถาวร (คำถาวร, Khamtavorn , Khamtawon ) , globally, is a very rare last name. The family name คำถาวร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
VARIANT | COUNTRY |
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Khamtavorn, Khamtawon, Kamthaworn | Thailand |
Kamthawon, Khamthaonok, Khamthavone, Khamthavong, Khamthawon, Khamthaworn, and Kumthaw