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In all the world, William Simon (William Simon
) is a very rare boy's first name. The first name William Simon is characteristic of Latin America and the Caribbean, particularly Peru, where it is a very rare male name. Very seldom, William Simon is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| William Simon | Nigeria, Ecuador, Chile, Sri Lanka, Peru |
Boyd, Stern, Reynolds, Rodriguez, and Gutierrez Roa