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Family name Efner (Efner ) , in all the world, is a very rare cognomen. The family name Efner is habitual in Argentina, where it is a very rare surname, Israel, and Canada. Measured by absolute frequency, it is the most numerous in the United States, Argentina, and Canada. Likewise, Efner is the forename as well as the last name.
VARIANT | COUNTRY |
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Efner | Argentina, Peru, Poland, United States, Philippines |