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Family name Clench (Clench
, พุกประจบ
) , in the world, is a rare cognomen. The last name Clench is habitual in the United Kingdom, where it is a rare surname, New Zealand, and Australia. Not in comparison with a country's population, it is commonest in the United Kingdom, Thailand, and South Africa. Very seldom, Clench is the forename as well as the last name.