# Alexander, Duke of Schleswig-Holstein-Sonderburg

> Duke of Schleswig-Holstein-Sonderburg

**Wikidata**: [Q62499](https://www.wikidata.org/wiki/Q62499)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Alexander,_Duke_of_Schleswig-Holstein-Sonderburg)  
**Source**: https://4ort.xyz/entity/alexander-duke-of-schleswig-holstein-sonderburg


## References

1. Integrated Authority File
2. The Peerage
3. Catalog of the German National Library
4. Dansk Biografisk Leksikon
5. Freebase Data Dumps. 2013
6. CERL Thesaurus
7. Sejm-Wielki.pl