# John I, Duke of Saxony

> German duke

**Wikidata**: [Q567387](https://www.wikidata.org/wiki/Q567387)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/John_I,_Duke_of_Saxony)  
**Source**: https://4ort.xyz/entity/john-i-duke-of-saxony


## References

1. The Peerage
2. Freebase Data Dumps. 2013
3. CERL Thesaurus
4. Sejm-Wielki.pl