# Hartmann I. von Grüningen

> Est 1200 - 4 Oct 1280

**Wikidata**: [Q1587287](https://www.wikidata.org/wiki/Q1587287)  
**Source**: https://4ort.xyz/entity/hartmann-i-von-gr-ningen


## References

1. Integrated Authority File
2. The Peerage
3. Genealogics
4. Catalog of the German National Library
5. Virtual International Authority File