Throughout the world, Aaltjen (Aaltjen 
) is an extremely rare boy's first name.
| VARIANT | COUNTRY |
|---|---|
| Aaltjen | United States |
| aaltjen wolsink Dutch Righteous Among the Nations, NL (b. 1883) |
|
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| aaltjen van lith - 19 Aug 1604 |
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| aaltjen hemminck |
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| aaltjen wessels |
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Webb, Henry, Volbers, Pikkemaat, and Vanderlught