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Surname ケラー (Keller , Kollár , Kelleher ) , globally, is a widespread cognomen. The family name ケラー is characteristic of Switzerland, where it is a common surname, Liechtenstein, and Ireland, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, it is commonest in the United States, Germany, and Switzerland. Very seldom, ケラー is the forename as well as the last name.