# Duchy of Warsaw (Middle Ages)

> former Duchy of Poland (1310–1370, 1381–1488)

**Wikidata**: [Q109284974](https://www.wikidata.org/wiki/Q109284974)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Duchy_of_Warsaw_(Middle_Ages))  
**Source**: https://4ort.xyz/entity/duchy-of-warsaw-middle-ages-