As long as they were under pressure by High Duke Bolesław IV, they ruled jointly at Wrocław, until tensions between them erupted into an open conflict in 1172.
Nii kaua, kui nad olid ülemhertsog Bolesław IV surve all, valitsesid nad ühiselt Wrocławist, kuni pinged nende vahel kasvasid aastal 1172 avalikuks konfliktiks.