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Last name Elba (Elba , Ilva , Elbe ) , all over the world, is a common cognomen. The cognomen Elba is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is quite a common surname, Honduras, and Argentina (explore the name in all countries). Not in comparison with a country's population, it is commonest in Latin America and the Caribbean, particularly Mexico, Argentina, and Venezuela. More frequently, Elba is the forename as well as the last name.