Casimir I the Restorer -LRB- ; b. KrakÃ w, 25 July 1016 - d. PoznaÅ, 28 November 1058 -RRB-, was a Duke of Poland of the Piast dynasty and the de facto monarch of the entire country since 1034 until his death.
Casimir I the Restorer -LRB- ; b. KrakÃ w, 25 July 1016 - d. PoznaÅ, 28 November 1058 -RRB-, was a Duke of Poland.