You perhaps could try out the Finnish Institution of Migration:
Institute of Migration / Emigrant Register
Piispankatu 3
20500 Turku, Finland
Telephone +358-2-231 7536
Telefax +358-2-233 3460
E-mail:
krister.bjorklund@abo.fi http://www.migrationinstitute.fi/migration/er_search.htm I didn't find anything approaching Matijos (Matijas?) Pöyliö on the passport and passenger records on the website. Perhaps you can find some help from the institute, however.
There has also been made a survey of our family, but it isn't available to me readily. In general, your ancestors may stem from Kemijärvi or Rovaniemi parishes. The belong today to the Lapland district, historically to the province of Outer Ostrobotnia. In any case, they belong to one of the older families f those localities.