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Cognomen Pianghathai (Pianghathai ) , worldwide, is an extremely rare last name. Much more frequently, Pianghathai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pianghathai | Thailand |
Yawirart, Keawdoungngam, Kingsangval, Premkamon, Kaewdoungngam, and Wittayawiroth