# Prince John Constantinovich of Russia

> Russian prince (1886-1918)

**Wikidata**: [Q524437](https://www.wikidata.org/wiki/Q524437)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Prince_John_Konstantinovich_of_Russia)  
**Source**: https://4ort.xyz/entity/prince-john-constantinovich-of-russia


## References

1. Czech National Authority Database
2. The Peerage
3. general catalog of BnF
4. Virtual International Authority File
5. Find a Grave
6. Freebase Data Dumps. 2013
7. Sejm-Wielki.pl