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Cognomen Happel (Ернст , هابل , Happel ) , throughout the world, is quite a common family name. The cognomen Happel is habitual in Germany, where it is quite a rare surname, Austria, and Denmark. Not in comparison with a country's population, it is the most numerous in Germany, the United States, and Netherlands. Much less frequently, Happel is the forename as well as the last name.