# Otto I, Count of Guelders

> Count of Guelders and participant in the Third Crusade

**Wikidata**: [Q74016](https://www.wikidata.org/wiki/Q74016)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Otto_I,_Count_of_Guelders)  
**Source**: https://4ort.xyz/entity/otto-i-count-of-guelders


## References

1. Integrated Authority File
2. The Peerage
3. Genealogics
4. Virtual International Authority File
5. Freebase Data Dumps. 2013
6. CERL Thesaurus
7. Sejm-Wielki.pl