Family name Leatham (Leatham 
) , in all the world, is quite a rare surname. The cognomen Leatham is habitual in Australia, where it is a rare surname, the United Kingdom, and Ireland. In absolute terms, it is commonest in the United States, the United Kingdom, and Australia. Very seldom, Leatham is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Leatham | United Kingdom, Ireland, Canada, Australia, United States |
| william leatham 1717 (b. 1701) |
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william leatham British banker, GB (b. 1785) |
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| mary leatham (1736-1820) (b. 1736) |
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| john leatham M; born 1740 February 03; died 1823 June 01 (b. 1740) |
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| elizabeth leatham (1742-1816) (b. 1742) |
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| william henry leatham British politician, GB (b. 1815) |
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| edward aldam leatham British politician (b. 1828) |
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ralph leatham Royal Navy admiral (1888-1954), GB (b. 1888) |
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| george leatham Australian politician, AU (b. 1849) |
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| charles alfred leatham (born 1849) (b. 1849) |
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| gerald leatham English county cricketer (1851-1932), GB (b. 1851) |
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| albert leatham cricketer (1859-1948), GB (b. 1859) |
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| james leatham Leatham, James (1865–1945), political activist and publisher, GB (b. 1865) |
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| eustace la trobe leatham Royal Navy vice-admiral (b. 1870) |
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| bertram henry leatham (1881-1915) (b. 1881) |
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