Cognomen Wellingk (Wellingk 
, Веллинг 
) , in the world, is a very rare family name. The last name Wellingk is characteristic of Finland, where it is a rare surname, and Russia, where it is a very rare surname.
| otto johan wellingk husband of Catarina von Cappel, SE (b. 1641) |
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| elisabeth wellingk wife of Johan Klingenberg, SE |
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