Hello Ervin,
i am at a very early stage of the searches for my ancestors at Ostpreußen.
The only sources i have, are the Wedding papers from my Grandpa. I hope for
more information too, because at Neu-Schiemanen was a bigger Airfield and
people tell me much sources are lost. However, i will spend my next Holliday
in the Schiemanen area, to meet my "Ahnen" mentally.
Sorry for my sharp edged English 
Michael