# Bertha

> abbess

**Wikidata**: [Q6451746](https://www.wikidata.org/wiki/Q6451746)  
**Source**: https://4ort.xyz/entity/bertha-q6451746


## References

1. La Préhistoire des Capétiens
2. Integrated Authority File
3. Historical Dictionary of Switzerland
4. CERL Thesaurus
5. Sejm-Wielki.pl