Surname Lamounier (Lamounier 
) , in the world, is quite a rare cognomen. The last name Lamounier is habitual in Brazil, where it is quite a rare surname, Portugal, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Lamounier is the forename as well as the last name.
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| Lamounier | Brazil, United Kingdom, United States, Portugal |
| gastão lamounier Brazilian composer, BR (b. 1893) |
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andré lamounier van lammeren Brazilian composer, BR (b. 1961) |
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| guilherme lamounier Brazilian actor, BR (b. 1950) |
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| lucia lamounier doctoral candidate at the London School of Economics and Political Science |
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| danielle mendonça buiatti lamounier researcher (ORCID 0000-0003-4502-3743) |
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| pauliana lamounier researcher |
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| joel alves lamounier researcher (ORCID 0000-0002-0581-3217) |
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