# John Frederick, Duke of Pomerania

> Protestant Bishop of Cammin and ruling Duke of Pomerania

**Wikidata**: [Q603277](https://www.wikidata.org/wiki/Q603277)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/John_Frederick,_Duke_of_Pomerania)  
**Source**: https://4ort.xyz/entity/john-frederick-duke-of-pomerania


## References

1. Integrated Authority File
2. The Peerage
3. LIBRIS. 2012
4. International Standard Name Identifier
5. Virtual International Authority File
6. Freebase Data Dumps. 2013
7. CERL Thesaurus
8. Sejm-Wielki.pl