TSAR IVAN SRATSIMIR’S STATE spanned the lands between the Timok and the Iskar. He was crowned Tsar in Vidin at the request of his father Ivan Alexander. During his lifetime he had attempted to settle the relationship between his two sons from different marriages by making the elder one ruler of the northwestern Bulgarian lands. However, distrust and resentment persisted. In times of ordeal, Ivan Sratsimir and Ivan Shishman failed to come to agreement, making things easier for the conqueror.