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Surname Roach (Roche
, Roach
, 罗奇
) , all over the world, is a widespread cognomen. The family name Roach is characteristic of British Virgin Islands, where it is a common surname, Barbados, and Ireland (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in the United States, France, and the United Kingdom. Very seldom, Roach is the forename as well as the last name.