# William IV, Landgrave of Hesse-Kassel

> Astronomer, Landgrave of Hesse-Kassel (1532-1592)

**Wikidata**: [Q696040](https://www.wikidata.org/wiki/Q696040)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/William_IV,_Landgrave_of_Hesse-Kassel)  
**Source**: https://4ort.xyz/entity/william-iv-landgrave-of-hesse-kassel


## References

1. Virtual International Authority File
2. Integrated Authority File
3. The Peerage
4. International Standard Name Identifier
5. RKDartists
6. Encyclopædia Britannica Online
7. Freebase Data Dumps. 2013
8. Czech National Authority Database
9. CERL Thesaurus
10. Sejm-Wielki.pl
11. Digital Scriptorium Catalog