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Family name Parley (Barley , Parley , Parler ) , around the world, is quite a common surname. The family name Parley is habitual in Saint Lucia, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and New Zealand. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Indonesia. Very seldom, Parley is the forename as well as the last name.