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Surname Proteau (Proteau
) , across the world, is quite a rare cognomen. The surname Proteau is characteristic of Canada, where it is quite a rare surname, France, where it is a rare surname, and New Zealand. Not in comparison with a country's population, it is commonest in Canada, France, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Proteau | Belgium, Canada, France, New Zealand, United States |