# Arthur I

> Breton noble, posthumous son of Geoffrey II, Duke of Brittany

**Wikidata**: [Q363800](https://www.wikidata.org/wiki/Q363800)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Arthur_I,_Duke_of_Brittany)  
**Source**: https://4ort.xyz/entity/arthur-i


## References

1. The Peerage
2. Virtual International Authority File
3. Encyclopædia Britannica Online
4. Find a Grave
5. Freebase Data Dumps. 2013