Surname Cains (Cains 
) , across the world, is quite a rare cognomen. The surname Cains is characteristic of New Zealand, where it is a rare surname, Australia, and the United Kingdom. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, Cains is the forename as well as the last name.
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| Cains | Australia, Bolivia, Democratic Republic of the Congo, United States, United Kingdom |
| thomas h. cains British-born glassmaker active in Boston, Massachusetts (1779 - 1865), GB (b. 1779) |
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| lance joseph cains (b. 1915) |
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| bev cains Member of the Australian Capital Territory House of Assembly, AU (b. 1938) |
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| gerald albert cains (b. 1932) |
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| carole cains Australian politician (born 1943), GB (b. 1943) |
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| anthony cains GB (b. 1936) |
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| aileen elizabeth cains (died 1945) |
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| g. l. cains Peerage person ID=412781 |
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| harriet cains actress, GB (b. 1993) |
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