# Frederick, Duke of Schleswig-Holstein-Sønderburg-Norburg

> Duke of Schleswig-Holstein-Sonderburg-Norburg (1581-1658)

**Wikidata**: [Q325092](https://www.wikidata.org/wiki/Q325092)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Frederick,_Duke_of_Schleswig-Holstein-Sønderburg-Norburg)  
**Source**: https://4ort.xyz/entity/frederick-duke-of-schleswig-holstein-s-nderburg-norburg


## References

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