Family name Blackley (Blackley 
) , around the world, is quite a rare last name. The cognomen Blackley is habitual in Isle of Man, where it is quite a rare surname, Australia, and New Zealand. Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Australia.
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| Blackley | Australia, Canada, New Zealand, United Kingdom, United States |
| john blackley (1767-1801) (b. 1767) |
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charles harrison blackley British doctor, GB (b. 1820) |
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| john blackley (1798-1862) (b. 1798) |
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| anne blackley (1799-1860) (b. 1799) |
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john blackley Australian politician, GB (b. 1862) |
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| alexander blackley British artist, active 1834-1874 (b. 1816) |
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| tempe blackley (1827-1863) (b. 1827) |
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| john blackley (1829-1894) (b. 1829) |
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| william lewery blackley Church of England clergyman and social reformer (b. 1830) |
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| susan blackley (1836-1916) (b. 1836) |
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| elizabeth maria blackley (1837-1900) (b. 1837) |
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| john henry blackley (1839-1911) (b. 1839) |
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| edmund fortescue lewery blackley (1839-1862) (b. 1839) |
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| frederick travers blackley (1841-1890) (b. 1841) |
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| elizabeth blackley (1843-1915) (b. 1843) |
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