Cognomen Bayardo (Bayardo 
) , throughout the world, is a common surname. The surname Bayardo is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a common surname, Honduras, where it is quite a rare surname, and Uruguay. Measured by absolute frequency, this name is the most popular in Nicaragua, Mexico, and the United States. Likewise, Bayardo is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bayardo | Nicaragua, United States, Mexico, Honduras, Guatemala |
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gloria bayardo Argentinian actor, AR (b. 1893) |
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lito bayardo Argentinian actor, AR (b. 1905) |
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| francisco bayardo (b. 1905) |
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| nelson bayardo Uruguayan writer, UY (b. 1922) |
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| asdrubal fontes bayardo Uruguayan racing driver (1922-2006), UY (b. 1922) |
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fernanda bayardo Mexican politician, MX |
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| luis bayardo Mexican actor, television actor and stage actor, MX (b. 1935) |
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| bayardo gámez (b. 1951) |
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| bayardo abaunza American soccer player, US |
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| sergio javier villaseñor bayardo researcher, ORCID id # 0000-0003-2206-6628 |
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| rubens bayardo researcher |
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| bayardo perez-ordonez researcher |
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| bayardo de murguia American actor, US (b. 1983) |
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| rosa maría bayardo cabrera mexican politician, MX (b. 1985) |
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| gabriela bayardo Mexican archer, MX (b. 1994) |
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