One of the lasting effects of his reign was the complete and utter destruction of the Pecheneg nomad
One of the lasting effects of his reign was the complete and utter destruction of the Pecheneg nomads to the north of the Danube. He also fended off an attack from the Normans led by Robert Guiscard, retook quite a bit of the Anatolian coastline, and founded a lasting Byzantine dynasty. FTP identify this emperor, whose deeds were chronicled by his daughter Anna, who may be best known for sending a letter to Urban II that inadvertently invited the First Crusade.
One of the lasting effects of his reign was the complete and utter destruction of the Pecheneg nomads to the north of the Danube.
{Alexius} I Comnenus