# Otto Friedrich v. Helmersen, a. Duckershof

> Statthalter von Oesel

**Wikidata**: [Q4135091](https://www.wikidata.org/wiki/Q4135091)  
**Source**: https://4ort.xyz/entity/otto-friedrich-v-helmersen-a-duckershof


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Deutsche Biographie