# Oldřich, Duke of Bohemia

> Duke of Bohemia

**Wikidata**: [Q454577](https://www.wikidata.org/wiki/Q454577)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Oldřich,_Duke_of_Bohemia)  
**Source**: https://4ort.xyz/entity/old-ich-duke-of-bohemia


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. Czech National Authority Database
5. Freebase Data Dumps. 2013
6. Sejm-Wielki.pl
7. Bibliography of the History of the Czech Lands