# Henry IV

> Duke of Saxony

**Wikidata**: [Q719501](https://www.wikidata.org/wiki/Q719501)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Henry_IV,_Duke_of_Saxony)  
**Source**: https://4ort.xyz/entity/henry-iv-q719501


## References

1. Sächsische Biografie
2. The Peerage
3. Hendrik van Saksen. Biografisch Portaal
4. Freebase Data Dumps. 2013
5. Virtual International Authority File
6. CERL Thesaurus
7. Sejm-Wielki.pl