# Ludwig Kotrba
**Wikidata**: [Q109259309](https://www.wikidata.org/wiki/Q109259309)  
**Source**: https://4ort.xyz/entity/ludwig-kotrba


## References

1. Czech National Authority Database
2. [Collection of Registry Books at Prague City Archives](http://katalog.ahmp.cz/pragapublica/permalink?xid=64581C0F3DEA45BEBC562EB6D5FB7A51&scan=80#scan80)
3. BillionGraves