# Otto VI or IV, Duke of Bavaria

> Duke of Lower Bavaria

**Wikidata**: [Q64304](https://www.wikidata.org/wiki/Q64304)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Otto_IV,_Duke_of_Lower_Bavaria)  
**Source**: https://4ort.xyz/entity/otto-vi-or-iv-duke-of-bavaria


## References

1. Integrated Authority File
2. Virtual International Authority File
3. Freebase Data Dumps. 2013
4. CERL Thesaurus
5. Sejm-Wielki.pl