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Cognomen Peacock (Peacock , Pikake , Пикок ) , all around the world, is a common surname. The last name Peacock is habitual in Marshall Islands, where it is a common surname, Jersey, where it is quite a common surname, and the United Kingdom (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Australia. Very seldom, Peacock is the forename as well as the last name.