# Peter zu Sayn-Wittgenstein
**Wikidata**: [Q16630486](https://www.wikidata.org/wiki/Q16630486)  
**Source**: https://4ort.xyz/entity/peter-zu-sayn-wittgenstein


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. [Source](https://kalliope-verbund.info/DE-611-BF-103173)
4. Sejm-Wielki.pl