Last name Petchey (Petchey 
) , all over the world, is a rare cognomen. The family name Petchey is characteristic of the United Kingdom, where it is a rare surname, Australia, where it is a very rare surname, and Thailand. Not in comparison with a country's population, it is the most numerous in the United Kingdom, Australia, and the United States. Very seldom, Petchey is the forename as well as the last name.
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| Petchey | Germany, United Kingdom, Australia, Thailand, United States |
| joan petchey Cornish revivalist, GB (b. 1920) |
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| jack petchey English businessman, GB (b. 1925) |
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| george petchey English footballer and manager (1931-2019), GB (b. 1931) |
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| philip petchey barrister; Chancellor, Diocese of Southwark, since 2010 (b. 1953) |
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| michael petchey cricketer (born 1958), GB (b. 1958) |
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| mark petchey British tennis player, GB (b. 1970) |
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| fiona petchey researcher |
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| martin petchey British politician, GB |
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| william john petchey historian |
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| peter petchey New Zealand archaeologist |
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| owen l petchey researcher |
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