# Friedrich IV., Herr von Schönburg
**Wikidata**: [Q21415866](https://www.wikidata.org/wiki/Q21415866)  
**Source**: https://4ort.xyz/entity/friedrich-iv-herr-von-sch-nburg


## References

1. Catalog of the German National Library
2. Genealogics
3. Integrated Authority File
4. [Source](http://saebi.isgv.de/gnd/139666575)
5. CERL Thesaurus