# Nicholas I, Duke of Troppau

> Duke of Opava (c.1255–1318)

**Wikidata**: [Q638363](https://www.wikidata.org/wiki/Q638363)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Nicholas_I,_Duke_of_Troppau)  
**Source**: https://4ort.xyz/entity/nicholas-i-duke-of-troppau


## References

1. Integrated Authority File
2. Silesia in the History of the Czech State I. From Prehistory to 1490
3. Virtual International Authority File
4. Czech National Authority Database
5. CERL Thesaurus
6. International Standard Name Identifier
7. WikiTree
8. Freebase Data Dumps. 2013
9. Sejm-Wielki.pl
10. Bibliography of the History of the Czech Lands