I think it's quite possible that the shaman called Horia is a member of
Siitari family.
In western Finland it was very usual that people were called after the name
of their farm and they really didn't have a surname. In eastern Finland
people had surnames because they were moving around their burn-beaten land
instead of staying in one place like in the west. So in the east it was
necessary to have more exact information on people in order to collect
taxes. Still in the east it's possible that the priest sometimes uses the
name of the farm instead of the family name, especially if there are a lot
of people with the same surname. So in some documents in the 17th and early
18th century there is Horia instead of Siitari. In some records there can
be both like in Christening records in 1685: Father Lars Horia ell. Sijter,
child Matz. 'Ell.' is shortened from Swedish word 'eller' which means 'or.'
In Horja lives now Jyrki, who is farming it, and his parents Toivo and Airi
Siitari. Jyrki has one sister called Ulla who lives in Helsinki-area with
her family. Toivo's parents were Kalle Siitari and Alma Hokkanen. Besides
Toivo, they had son Martti and daughter Airi (who is my mother. Airi seems
to be a popular name in Finland in the 1930s). Martti and his wife Lempi
live now in Kangasniemi. They have 3 daughters, Tarja, Taina and Tuija.
Tarja lives in Luusniemi village, not far from Horja, with her family.
Taina and her family live in Pieksämäki and Tuija lives in Kuopio. My mother
Airi and father Heikki Hänninen have a farm near Mikkeli, though they are
retired now. I have one brother called Juha.
There are several places where you can find information on Finnish soldiers
depending on which period of time is in question:
Swedish War Archive in Stockholm (http://www.ra.se/KRA/english.html) has
lots of different kinds of records about Finland starting from 16th century
until early 19th century. Some of them are microfilmed. Finnish War Archive
in Helsinki (http://www.sota-arkisto.fi/, E-mail sark@sota-arkisto.fi) and
the National Archives in Helsinki (there is e.g. a collection called
Militaria, http://www.narc.fi/, E-mail: kansallisarkisto@narc.fi have
records from Russian period (1809-1917) until today. Some records can be
found also from the archives of the provincial governments. These archives
are now in the Provincial Archives.

Anne Hänninen