Wikipedia
Osiniak-Piotrowo
Osiniak-Piotrowo is a village in the administrative district of Gmina Ruciane-Nida, within Pisz County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately west of Ruciane-Nida, west of Pisz, and east of the regional capital Olsztyn.
Before 1945 the area was part of Germany ( East Prussia).
The village has a population of 200.