# Bolko I the Strict

> Duke of Jawor

**Wikidata**: [Q673302](https://www.wikidata.org/wiki/Q673302)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Bolko_I_the_Strict)  
**Source**: https://4ort.xyz/entity/bolko-i-the-strict


## References

1. The Peerage
2. Integrated Authority File
3. Bibliography of the History of the Czech Lands
4. Freebase Data Dumps. 2013
5. CERL Thesaurus
6. Virtual International Authority File
7. Sejm-Wielki.pl