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Last name Alfredus (Alfred , אלפרד , ألفريد ) , in the world, is a widespread cognomen. The cognomen Alfredus is characteristic of Saint Lucia, where it is a common surname, Poland, and Marshall Islands (explore the name in all countries). Measured by absolute frequency, it is commonest in Poland, Nigeria, and Tanzania. More frequently, Alfredus is the forename as well as the last name.