# Duchy of Poland

> historical country (1138–1227)

**Wikidata**: [Q616915](https://www.wikidata.org/wiki/Q616915)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Duchy_of_Poland_(1138–1227))  
**Source**: https://4ort.xyz/entity/duchy-of-poland-q616915-2