# Popiel

> legendary Polish ruler

**Wikidata**: [Q726537](https://www.wikidata.org/wiki/Q726537)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Popiel)  
**Source**: https://4ort.xyz/entity/popiel


## References

1. Catalog of the German National Library
2. Freebase Data Dumps. 2013
3. CERL Thesaurus