# Duke Johann of Oldenburg

> (1940-2025)

**Wikidata**: [Q75390945](https://www.wikidata.org/wiki/Q75390945)  
**Source**: https://4ort.xyz/entity/duke-johann-of-oldenburg


## References

1. The Peerage
2. [Source](https://gothanjou.blog/2025/04/17/johann-herzog-von-oldenburg-1940-2025/)