Family name Quessy (Quessy 
) , in the world, is a rare last name. The family name Quessy is characteristic of Mauritius, where it is quite a rare surname, Canada, and New Zealand, where it is a rare surname. Measured by absolute frequency, it is commonest in Canada, Mauritius, and Australia. Very seldom, Quessy is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Quessy | Mauritius, Australia, United States, Canada, Democratic Republic of the Congo |
| marc quessy Canadian Paralympian (b. 1901) |
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| stephan quessy researcher |
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| jean-françois quessy Ph.D. Université Laval 2005 |
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| sylvain quessy |
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