# Eric IV, Duke of Saxe-Lauenburg

> German duke

**Wikidata**: [Q72255](https://www.wikidata.org/wiki/Q72255)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Eric_IV,_Duke_of_Saxe-Lauenburg)  
**Source**: https://4ort.xyz/entity/eric-iv-duke-of-saxe-lauenburg


## References

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