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Family name Ferreiro (Ferreiro
, فريرو
, Феррейро
) , in the world, is a common cognomen. The cognomen Ferreiro is habitual in Andorra, where it is quite a common surname, Paraguay, and Uruguay (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Argentina, Spain, and Paraguay. Much less frequently, Ferreiro is the forename as well as the last name.