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Cognomen Promnoy (Promnoy ) , globally, is a rare family name. The last name Promnoy is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
Sujin, Waraporn, Warattaya, Nongnoot, Nathawan, Chollada, Saisunee, Ratthachat, Wilpong, Nittaya, Patawee, Apisara, Pimrak, Aummon, Manoon, Vorporn, and Wanassanun