# Vladislaus I

> Duke of Bohemia

**Wikidata**: [Q454827](https://www.wikidata.org/wiki/Q454827)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Vladislaus_I,_Duke_of_Bohemia)  
**Source**: https://4ort.xyz/entity/vladislaus-i


## References

1. Integrated Authority File
2. The Peerage
3. Catalog of the German National Library
4. Virtual International Authority File
5. Freebase Data Dumps. 2013
6. CERL Thesaurus
7. Sejm-Wielki.pl