# Lacek z Kravař a Helfštejna
**Wikidata**: [Q12032436](https://www.wikidata.org/wiki/Q12032436)  
**Source**: https://4ort.xyz/entity/lacek-z-krava-a-helf-tejna


## References

1. [Bibliography of the History of the Czech Lands](https://biblio.hiu.cas.cz/records/f8f90652-f598-4302-97ed-faba911c6e52)