All over the world, Mercadero (Mercadero 
) is an extremely rare unknown gender first name. Much more prevalently, Mercadero is the last name as well as the forename.
Ana, Jose, John, Joan, Joel, Joey, Jean, Juan, Jhun, Nida, Nora, Noel, Noli, Eder, Edna, Eric, Emil, Emma, Iven, Owen, Maria, Mario, Loue, Liza, Lina, Levy, Gil, Joy, Ely, Eve, Ian, Mark, Mela, Mila, Mico, Alex, Marlo, Aida, Afra, Rosa, Rene, Reny, Ruel, Rufo, Rhea, Diza, Gina, Glen, Aisa, and Matea