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Cognomen ฤทธิ์ถาวร (ฤทธิ์ถาวร , Rittavorn , Ritthavorn ) , around the globe, is a rare surname. The surname ฤทธิ์ถาวร is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
VARIANT | COUNTRY |
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Ritthavorn, ฤทธิ์ถาวร, Rittavorn | Thailand |