Last name Marello (Marello 
) , across the world, is quite a rare family name. The cognomen Marello is habitual in Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Portugal. In absolute terms, it is commonest in Italy, Argentina, and the United States. Much less frequently, Marello is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Marello | Argentina, United States, France, Italy, Brazil |
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giuseppe marello Italian bishop (1844-1895), IT (b. 1844) |
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| carla marello Italian linguist, IT (b. 1952) |
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| matthew marello American video artist, US (b. 1960) |
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| maria marello Italian athletics competitor, IT (b. 1961) |
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| josé luis marello Argentine canoeist, AR (b. 1965) |
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| enrico marello IT (b. 1973) |
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| alex marello Canadian soccer player, CA (b. 1988) |
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| madeline m. marello |
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Mr, Remo, Dano, Dora, Gary, Gian, Gino, Lisa, Lori, Lois, Rosa, Luca, Luis, Jana, Jose, Joss, John, Joao, Jeff, Juan, June, Lucy, Raul, Pier, Babe, Ms, Max, Mã, Ana, Dan, Jes, Ted, Ida, Zoe, Mary, Mark, Mara, Matt, Mike, Sara, Alan, Aldo, Andy, Anna, Agos, Caio, Tony, and Nick