Surname Mainella (Mainella 
) , across the world, is quite a rare last name. The cognomen Mainella is characteristic of Italy, where it is a rare surname, Canada, and Argentina. In absolute terms, it is commonest in Italy, the United States, and Argentina. Much less frequently, Mainella is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Mainella | Romania, Italy, United States, Argentina, Canada |
| raffaele mainella Italian painter and architect (1856-1941), IT (b. 1856) |
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| cesare mainella Italian painter (1885-1975), IT (b. 1885) |
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fran p. mainella Director od the US National Park Service, US (b. 1947) |
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| raffaele mainella Peerage person ID=363374 |
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| giuseppe mainella Peerage person ID=363375 |
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| adrian mainella Canadian journalist |
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