Johan Fremling

• Born around 1680 (estimate) in Viborg.
• Dead around 1710 (estimate) in Viborg. Maybe during Viborg being sieged and taken by the Russians in 1710.

Source: Viborgs Stads Historia, J.W.Ruuth, page 342. De enda faktorer, som borgerskapet synes varit belåtet med, voro de under tjäruhandelssocietetens tid (1689—1710) verkande kommissionärerna Peter Thegner, Johan Fremling, Antoni Priem och Peter Thesleff.

A "commissioner" in the "society of tar exchange" (tjäruhandelssocietetet) must have been over 20 years old (presumably more). Johan can't be born before 1679 because his parents got married then. A sister was born in 1681. So 1680 seems like a good guess as birth year, He might also have been born in 1682 (nobody else born that year, as known for the moment). It is a little surprising that Per and Anna would have called their first-born Johan, it does not seem to be a traditional name in either family - but there could be other reasons. Per and Anna do seem to use "untraditional" names for some other children too..

As far as the years are concerned, you omit the possibility of twins.

The name Johan is very common, nothing strange about that.