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In all the world, William Efrain (William Efrain
) is a very rare masculine given name. The forename William Efrain is habitual in Latin America and the Caribbean, particularly Peru, where it is a rare male name.
| VARIANT | COUNTRY |
|---|---|
| William Efrain | Spain, Ecuador, Chile, Peru, Costa Rica |
Gomez, Torres, Andrade Mera, Valarezo Zuñiga, Murillo Bones, and Figueroa Astudillo