# John Ernest IV, Duke of Saxe-Coburg-Saalfeld

> Duke of Saxe-Coburg-Saalfeld

**Wikidata**: [Q63769](https://www.wikidata.org/wiki/Q63769)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/John_Ernest_IV)  
**Source**: https://4ort.xyz/entity/john-ernest-iv-duke-of-saxe-coburg-saalfeld


## References

1. Integrated Authority File
2. Czech National Authority Database
3. The Peerage
4. Virtual International Authority File
5. Find a Grave
6. Freebase Data Dumps. 2013
7. Sejm-Wielki.pl