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Cognomen Merlain (Merlain
) , throughout the world, is a rare surname. The family name Merlain is characteristic of Cameroon, where it is a rare surname, Switzerland, and the United States, where it is a very rare surname. More frequently, Merlain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Merlain | Switzerland, Mexico, United States, Democratic Republic of the Congo, Cameroon |