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Family name Benjamaphorn (Benjamaphorn ) , across the world, is an extremely rare cognomen. Much more prevalently, Benjamaphorn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Benjamaphorn | Thailand |
Inpai, Sunyotvit, Sunyovit, Bounoon, Tungyarith, Suetrong, Kongsinon, Jhumnonglert, Jongkonnitan, and Khongkhunthod