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Globally, Xaiyavongsa (Xaiyavongsa ) is an extremely rare unknown gender forename. Much more prevalently, Xaiyavongsa is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Xaiyavongsa | Laos |
Pavina, Suannalong, Sompong, Somchai, and Latsamy