Last name Onley (Onley 
) , in all the world, is quite a rare family name. The surname Onley is characteristic of Isle of Man, where it is quite a rare surname, Australia, where it is a rare surname, and the United States. Measured by absolute frequency, it is the most numerous in the United States, Australia, and the United Kingdom. Much less frequently, Onley is the forename as well as the last name.
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| Onley | Australia, Egypt, United States, Myanmar, United Kingdom |
| thomas onley English Member of Parliament (b. 1523) |
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| barbara onley (1526-1561) (b. 1526) |
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| william onley (born 1587) (b. 1587) |
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| elizabeth onley (born 1589) (b. 1589) |
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margaret onley Peerage person ID=599574 (b. 1642) |
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| charles savill onley 1757 - 31 August 1843 (b. 1757) |
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| onley savill onley (1795-1890), GB (b. 1795) |
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| caroline savill onley (born 1820) (b. 1820) |
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| louisa harvey savill onley (1824-1849) (b. 1824) |
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| charles savill onley (born 1827) (b. 1827) |
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| arthur savill onley (born 1835) (b. 1835) |
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| mary whitaker savill onley (born 1839) (b. 1839) |
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| maria harvey savill onley (born 1857) (b. 1857) |
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david onley Lieutenant Governor of Ontario, CA (b. 1950) |
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| ken onley Australian rules footballer, AU (b. 1914) |
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