Surname Joass (Joass 
) , all over the world, is a rare family name. The family name Joass is characteristic of Australia, where it is a rare surname, New Zealand, and the United Kingdom, where it is an extremely rare surname. Very seldom, Joass is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Joass | United Kingdom, Australia, United States, Brazil, New Zealand |
| mary joass (died 1819) (b. 1771) |
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| james maxwell joass geologist and archaeologist (b. 1830) |
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| john james joass British architect (b. 1868) |
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| bill joass rugby league footballer |
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| rangi joass Australian rugby league footballer |
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| alexander joass Peerage person ID=210 |
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| trael joass New Zealand rugby union player (b. 1995) |
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