Konrad I of Masovia High Duke of Poland (1187-1247) (1187–1247) Parents Helen of Znojmo Casimir II the Just Children Casimir I of Kuyavia Bolesław I of Masovia Eudoxia of Masovia Siemowit I of Masovia Judith of Masovia Dubrawka of Masovia Siblings Leszek I the White Adelaide of Poland Maria of Poland Partners Agafia of Rus
