Adding tags old_name with german names of villages and cities in Silesia area has no sense. Cause:
- a lot of them are old slavic names written with german translation (f.ex. Schweidnitz, Kroischwitz, Wilkau)
- nazis changed a lot of slavic names in 1934 to more german (Babitz -> Jungbirken, Kandrzin -> Heydebreck), action had been called: "Fort mit der polnischen fasade"
- there is no schema to tag historical names at all.
So if I find such names I will delete them without warning.