[Verginius Rufus]

Silesia belonged to Germany until 1945 when it was given to Poland—at the same time Stalin took large chunks of Eastern Poland (where much of the population was White Russian or Ukrainian). The Germans fled from Silesia and the area was resettled by Poles. If any Germans are there now they are probably not very numerous.

[SunkenCiv]

Not German, Silesian.

http://www.cafebabel.co.uk/berlin/article/upper-silesia-torn-between-poland-germany-and-dreams-of-autonomy.html

https://www.ft.com/content/7ff14a52-74a2-11e3-9125-00144feabdc0

http://www.voxeurop.eu/en/content/article/578111-irreducible-autonomy-silesia

http://www.google.com/search?q=Silesian%20Autonomy&spell=1&ie=UTF-8