# Duchy of Nysa

> Silesian duchy (1290–1850)

**Wikidata**: [Q570702](https://www.wikidata.org/wiki/Q570702)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Duchy_of_Nysa)  
**Source**: https://4ort.xyz/entity/duchy-of-nysa


## References

1. Freebase Data Dumps. 2013
2. [Bibliography of the History of the Czech Lands](https://biblio.hiu.cas.cz/records/bc312d21-62bf-4099-b18f-054f08799ac8)