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Last name Hennel (Hennel , Хеннель ) , in the world, is quite a rare surname. The cognomen Hennel is characteristic of Eastern Europe, particularly Slovakia, where it is quite a rare surname, Hungary, and Poland, where it is a rare surname. Measured by absolute frequency, it is commonest in Slovakia, France, and Germany. Very seldom, Hennel is the forename as well as the last name.