Family name Mercadero (Mercadero 
) , all over the world, is quite a rare cognomen. The cognomen Mercadero is habitual in Philippines, where it is quite a rare surname, and Saudi Arabia, where it is a very rare surname.
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