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Cognomen Ertle (Ertle
) , across the world, is quite a rare last name. The last name Ertle is habitual in Western Europe, particularly Germany, where it is quite a rare surname, France, where it is a rare surname, and Switzerland. Not in comparison with a country's population, it is commonest in Germany, the United States, and France. Very seldom, Ertle is the forename as well as the last name.