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Surname ヘイリー (Hayley , Haley , Hailey , along with others...) , in the world, is a common last name. The cognomen ヘイリー is characteristic of Guernsey, where it is quite a common surname, the United States, and the United Kingdom, where it is quite a rare surname. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Canada. More prevalently, ヘイリー is the forename as well as the last name.