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