# Carl Hacker

> Estonian clerk resided in Russia, first husband of poet Marie Under (1878-1948)

**Wikidata**: [Q17446740](https://www.wikidata.org/wiki/Q17446740)  
**Source**: https://4ort.xyz/entity/carl-hacker


## References

1. [Source](https://www.geni.com/people/Carl-Eduard-Hacker-Haling/6000000008269005256)
2. [Source](https://dea.digar.ee/?a=d&d=kassarimaa20161201.2.12&e=-------et-25--1--txt-txIN%7ctxTI%7ctxAU%7ctxTA-------------)