# Wertislaw of Mecklenburg
**Wikidata**: [Q1730353](https://www.wikidata.org/wiki/Q1730353)  
**Source**: https://4ort.xyz/entity/wertislaw-of-mecklenburg


## References

1. Integrated Authority File
2. Virtual International Authority File
3. CERL Thesaurus
4. Sejm-Wielki.pl