# Friedrich Ferdinand, Duke of Schleswig-Holstein

> Duke of Schleswig-Holstein-Sonderburg-Glücksburg, then Titular Duke of Schleswig-Holstein (1855-1934)

**Wikidata**: [Q61782](https://www.wikidata.org/wiki/Q61782)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Friedrich_Ferdinand,_Duke_of_Schleswig-Holstein)  
**Source**: https://4ort.xyz/entity/friedrich-ferdinand-duke-of-schleswig-holstein


## References

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