# Willem de Perponcher Sedlnitzky

> Dutch philosopher and politician

**Wikidata**: [Q2490959](https://www.wikidata.org/wiki/Q2490959)  
**Source**: https://4ort.xyz/entity/willem-de-perponcher-sedlnitzky


## References

1. BnF authorities
2. general catalog of BnF
3. Virtual International Authority File
4. CERL Thesaurus
5. Biografisch Portaal
6. [BnF authorities](http://data.bnf.fr/ark:/12148/cb10693730n)