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Last name จำนงค์สิน (จำนงค์สิน, Jamnongsin , Jumnongsin ) , around the globe, is an extremely rare cognomen. The family name จำนงค์สิน is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
VARIANT | COUNTRY |
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Jamnongsin, Jumnongsin | Thailand |