Family name Leadley (Leadley 
) , in the world, is quite a rare surname. The cognomen Leadley is characteristic of New Zealand, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Sweden. Not in comparison with a country's population, this name is the most popular in the United Kingdom, the United States, and Canada.
| VARIANT | COUNTRY |
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| Leadley | Sweden, United Kingdom, United States, Canada, New Zealand |
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robert leadley American baseball manager (1858-1936), US (b. 1858) |
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| bill leadley (b. 1884) |
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| w. e. leadley (b. 1903) |
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| tony leadley British rower, GB (b. 1928) |
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| elizabeth jean leadley (born 1935) (b. 1935) |
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| colin stanley leadley (born 1937) (b. 1937) |
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| william roland leadley (1940-1940) (b. 1940) |
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| norman laurence leadley (born 1941) (b. 1941) |
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| ngaire greta leadley (born 1943) (b. 1943) |
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| alison marguerite leadley (born 1943) (b. 1943) |
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leadley English singer-songwriter, YouTuber, presenter, and actress, GB (b. 1995) |
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| kenneth roland leadley (born 1946) (b. 1946) |
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| stuart robinson leadley (born 1946) (b. 1946) |
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| dorothy eleanor leadley (born 1948) (b. 1948) |
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| cynthia ann leadley (born 1961) (b. 1961) |
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