# Siegfried Propper
**Wikidata**: [Q15056013](https://www.wikidata.org/wiki/Q15056013)  
**Source**: https://4ort.xyz/entity/siegfried-propper


## References

1. grave
2. Léonore database
3. [Le Figaro. 1936](http://gallica.bnf.fr/ark:/12148/bpt6k4093388/f2)