# Friedrich Ludwig Carl Christian zu Castell-Rüdenhausen
**Wikidata**: [Q19959138](https://www.wikidata.org/wiki/Q19959138)  
**Source**: https://4ort.xyz/entity/friedrich-ludwig-carl-christian-zu-castell-r-denhausen


## References

1. Genealogics
2. Catalog of the German National Library
3. Integrated Authority File