# Duchy of Pless

> historic territory in Upper Silesia

**Wikidata**: [Q474263](https://www.wikidata.org/wiki/Q474263)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Duchy_of_Pless)  
**Source**: https://4ort.xyz/entity/duchy-of-pless


## References

1. Freebase Data Dumps. 2013