Konrad of Masovia
Konrad of Mazovia (1187 - 1247) was Duke of Mazovia, son of Casimir II of Poland ("the Just") and Helen, princess of Moravia. After his father's death in 1194, he was brought up by his mother and in 1202 he received Mazovia and Kujawy. He married the Russian princess Agafia. In 1228 he brought the Teutonic Knights to Mazovia.
| Preceded by: Vladislaus III Laskonogi | High-Duke of Poland first time (1228-1232) | Succeeded by: Henry I the Bearded |
| Preceded by: Henry II the Pious | High-Duke of Poland second time (1241-1243) | Succeeded by: Boleslaus |
de:Konrad I. (Polen) pl:Konrad I Mazowiecki