# Willem Backer
**Wikidata**: [Q21553088](https://www.wikidata.org/wiki/Q21553088)  
**Source**: https://4ort.xyz/entity/willem-backer


## References

1. Biografisch Portaal
2. Digital Library for Dutch Literature
3. Repertorium van ambtsdragers en ambtenaren
4. [Source](http://www.historici.nl/retroboeken/elias?source=2&page_number=947)