To buy time for this ruler to seize power, his mother sought religious refuge and refused to leave until her son's predecessor had personally guaranteed her safety. Before assuming the throne, this man led his predecessor's army to victory at the Battle of Kalavrye, thereby 
To buy time for this ruler to seize power, his mother sought religious refuge and refused to leave until her son's predecessor had personally guaranteed her safety. Before assuming the throne, this man led his predecessor's army to victory at the Battle of Kalavrye, thereby crushing the rebellion of Nicephorus Bryennius the Elder. He allied with the Cumans to win the Battle of Levounion over Emir Tzachas of Smyrna and the Pechenegs. This ruler's religious policy included persecution of the Bogomils and burning Basil the Physician. This son of Anna Dalassene bribed the Holy Roman Emperor Henry IV to attack the Normans under Robert Guiscard after himself losing to Guiscard at the Battle of Dyrrhachium. This ruler sent envoys to the Council of Piacenza for help against the Seljuq Turks, prompting Pope Urban II to call the First Crusade, which this man intended for his domestic political ends. For 10 points, name this Byzantine emperor whose namesake chronicle was written by his daughter, Anna Comnena.
To buy time for this ruler to seize power, his mother sought religious refuge and refused to leave until her son's predecessor had personally guaranteed her safety.
Alexius I or Alexius Comnenus [prompt on partial answers; while a regnal number is unnecessary if a player gives the second answer, do not accept "Alexius II Comnenus"]