Cognomen Deun (Deun 
) , worldwide, is a rare last name. The surname Deun is habitual in Western Europe, particularly Belgium, where it is quite a rare surname, Netherlands, where it is a rare surname, and France. Very seldom, Deun is the forename as well as the last name.
| peter van deun Belgian philologist, BE (b. 1961) |
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| raymond le deun French official, FR |
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| armand van deun researcher |
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| katrijn van deun researcher |
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| joris van deun Ph.D. Katholieke Universiteit Leuven 2004 |
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| lieselot van deun researcher |
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| jan van deun researcher |
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| soetkin van deun Belgian tennis player, BE (b. 1988) |
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| katrijn van deun |
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| piet van deun |
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| rik van deun researcher |
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