# Nicolaus Olai Helsingius
**Wikidata**: [Q26239737](https://www.wikidata.org/wiki/Q26239737)  
**Source**: https://4ort.xyz/entity/nicolaus-olai-helsingius


## References

1. [Dictionary of Swedish National Biography](https://sok.riksarkivet.se/Sbl/Presentation.aspx?id=8882)