# Ottokar Gunther Constantin Graf zu Sayn-Wittgenstein-Berleburg

> (1911-1955)

**Wikidata**: [Q75373578](https://www.wikidata.org/wiki/Q75373578)  
**Source**: https://4ort.xyz/entity/ottokar-gunther-constantin-graf-zu-sayn-wittgenstein-berleburg


## References

1. The Peerage
2. Catalog of the German National Library
3. Virtual International Authority File
4. CiNii Research