# Jan IV of Oświęcim

> Duke of Oświęcim and Karniów

**Wikidata**: [Q480721](https://www.wikidata.org/wiki/Q480721)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Jan_IV_of_Oświęcim)  
**Source**: https://4ort.xyz/entity/jan-iv-of-o-wi-cim


## References

1. Freebase Data Dumps. 2013
2. Sejm-Wielki.pl