# Pyotr Heyden

> Baltic German politician (1840-1907)

**Wikidata**: [Q4134806](https://www.wikidata.org/wiki/Q4134806)  
**Source**: https://4ort.xyz/entity/pyotr-heyden


## References

1. Great Russian Encyclopedia
2. Erik Amburger database
3. Virtual International Authority File
4. IdRef
5. Library of Congress Control Number