duke bolesław i the tall and his younger brother mieszko i tanglefoot divided the territory among themselves into the two duchies of wrocław and racibórz. bolesław originally had the intention to bequest the duchy of wrocław as a whole to his son of his second marriage henry i the bearded, which caused the protest of his eldest son jarosław. after a long-term dispute in 1172 the duchy of opole was formed with jarosław becoming the first duke. in turn he was obliged to an ecclesiastical career and became bishop of wrocław in 1198.