# Casimir I the Restorer - Duke of Poland

URL: https://poland-history.com/rulers/casimir-i-the-restorer
Reign: 1039–1058
Born-Died: 1016 - 1058
Dynasty: House of Piast
Wikipedia: https://en.wikipedia.org/wiki/Casimir_I_the_Restorer

Rebuilt the Piast state after the crisis of the 1030s, recovering Masovia and Silesia and moving the centre of power to Kraków.

## Succession
- Preceded by: [Bolesław the Forgotten](https://poland-history.com/rulers/boleslaw-the-forgotten)
- Succeeded by: [Bolesław II the Generous](https://poland-history.com/rulers/boleslaw-ii-the-generous)

## Timeline events during this reign
- 1039 - [Bretislaus I sacks Gniezno](https://poland-history.com/timeline/1039-bretislaus-i-sacks-gniezno)
- 1039 - [Casimir the Restorer returns](https://poland-history.com/timeline/1039-casimir-the-restorer-returns)
- 1044 - [Benedictine abbey founded at Tyniec](https://poland-history.com/timeline/1044-benedictine-abbey-founded-at-tyniec)
- 1047 - [Casimir defeats Masław of Masovia](https://poland-history.com/timeline/1047-casimir-defeats-maslaw-of-masovia)
- 1050 - [Casimir recovers Silesia](https://poland-history.com/timeline/1050-casimir-recovers-silesia)
- 1058 - [Bolesław II the Generous succeeds Casimir](https://poland-history.com/timeline/1058-boleslaw-ii-the-generous-succeeds-casimir)