Agnes of Cieszyn (1338-1371) (1338–1371) Parents Eufemia of Masovia Casimir I, Duke of Cieszyn Children Konrad III the Old Siblings Jan of Cieszyn Siemowit of Cieszyn Przemyslaus I Noszak, Duke of Cieszyn Bolesław of Cieszyn Jolanta Helena of Cieszyn Elisabeth of Cieszyn Anna of Cieszyn Władysław of Cieszyn Partners Konrad II the Gray