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Last name Kelch (Calix , Kelch , Кельш ) , across the world, is a common family name. The cognomen Kelch is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a common surname, Nicaragua, where it is quite a common surname, and El Salvador. In absolute terms, the name is most common in Honduras, the United States, and Germany. Very seldom, Kelch is the forename as well as the last name.