# Robert-Jean Longuet

> Karl Marx's great-grandson

**Wikidata**: [Q2156224](https://www.wikidata.org/wiki/Q2156224)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Robert-Jean_Longuet)  
**Source**: https://4ort.xyz/entity/robert-jean-longuet


## References

1. Le Maitron
2. birth certificate
3. Integrated Authority File
4. BnF authorities
5. The New York Times. 1987
6. Deux siècles d'histoire au Père Lachaise
7. International Standard Name Identifier
8. Virtual International Authority File
9. National Library of Israel Names and Subjects Authority File