Surname Dewart (Dewart 
) , in the world, is quite a rare last name. The last name Dewart is habitual in Belgium, where it is quite a rare surname, Canada, where it is a rare surname, and the United Kingdom. In absolute terms, it is the most numerous in the United States, Belgium, and the United Kingdom. Much less frequently, Dewart is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Dewart | Canada, Belgium, United Kingdom, United States, Germany |
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william lewis dewart American politician, US (b. 1821) |
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edward hartley dewart Canadian writer, CA (b. 1828) |
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| leslie dewart Canadian philosopher, CA (b. 1922) |
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| gilbert dewart (b. 1932) |
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| leslie dewart badminton player, GB (b. 1973) |
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| sean dewart Canadian lawyer, CA |
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