Last name Treweek (Treweek 
) , throughout the world, is a rare cognomen. The cognomen Treweek is habitual in Australia, where it is quite a rare surname, New Zealand, where it is a rare surname, and the United Kingdom. In absolute terms, the name is most common in Australia, the United Kingdom, and the United States.
| VARIANT | COUNTRY |
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| Treweek | United Kingdom, South Africa, Australia, United States, New Zealand |
| charles treweek New Zealand cricketer, NZ (b. 1859) |
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athanasius treweek Australian linguist, AU (b. 1911) |
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hazel treweek Australian academic and teacher, AU (b. 1919) |
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| george treweek Australian rugby league footballer, AU (b. 1905) |
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rachel treweek Bishop of Gloucester, GB (b. 1963) |
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| bernie treweek Australian rules footballer (1914-1957) (b. 1914) |
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| george edgar treweek (b. 1937) |
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| james treweek mining manager in Amlwch, Wales |
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| shaun treweek researcher |
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| teresa m treweek researcher |
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| jennifer b treweek |
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