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Last name Kelam (Kelam , Clamp , Келам ) , worldwide, is quite a common cognomen. The cognomen Kelam is habitual in Isle of Man, where it is quite a common surname, Croatia, where it is quite a rare surname, and the United Kingdom. In absolute terms, it is the most numerous in India, the United Kingdom, and the United States. Likewise, Kelam is the forename as well as the last name.