# Leopold Königstein
**Wikidata**: [Q3229806](https://www.wikidata.org/wiki/Q3229806)  
**Source**: https://4ort.xyz/entity/leopold-k-nigstein


## References

1. BillionGraves
2. Catalog of the German National Library
3. Virtual International Authority File
4. Österreichisches Biographisches Lexikon 1815–1950
5. Alvin
6. National Library of Israel Names and Subjects Authority File