# Gustav Johann Freiherr von Mengden
**Wikidata**: [Q55856252](https://www.wikidata.org/wiki/Q55856252)  
**Source**: https://4ort.xyz/entity/gustav-johann-freiherr-von-mengden-q55856252


## References

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