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Cognomen Phengthongsavath (Phengthongsavath ) , all around the world, is an extremely rare family name. The last name Phengthongsavath is habitual in Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phengthongsavath | United States |
Kesone, and Thidaphone