From: Matti Pasanen <ukmapa@uta.fi>
I think that I could give you also
additional information on the later generations of these lines.

I think that just via census and tax records it is perhaps possible
to trace earlier Niskanen ancestors. According to some researches
based on tax records the first Niskanen came to Pihtipudas from
Pielavesi parish (from eastern Finland) in the middle of 16th
century. Pihtipudas was a part of Viitasaari at that time. The name
of this man was Lauri Niskanen and I think that most of Niskanen
named people living in Pihtipudas and Viitasaari are descendants of
that man. The father and brothers of Lauri are also known. I can
check their names and inform you on them later.

Matti