# Gertrud of Lorraine

> Countess of Holland

**Wikidata**: [Q467022](https://www.wikidata.org/wiki/Q467022)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Petronilla_of_Lorraine)  
**Source**: https://4ort.xyz/entity/gertrud-of-lorraine


## References

1. [Medieval Lands](http://fmg.ac/Projects/MedLands/LORRAINE.htm)
2. Virtual International Authority File
3. Petronilla van Saksen. Biografisch Portaal
4. Freebase Data Dumps. 2013
5. Online Dictionary of Dutch Women
6. CERL Thesaurus