Otto II

Otto II was crowned Holy Roman Emperor by Pope John XIII on December 25, 967, in Rome. He was co-emperor with his father, Otto I, until the latter's death in 973. This coronation confirmed the Ottonian dynasty's control over the imperial title.

Otto II married Theophanu, a Byzantine princess, in Rome on April 14, 972. This marriage was a diplomatic triumph, symbolizing the recognition of the Ottonian dynasty by the Byzantine Empire. Theophanu later served as regent for their son, Otto III.

Otto II launched a major campaign in Italy to assert imperial control over the south and counter Byzantine influence. He captured Taranto and Benevento but faced resistance from local Lombard and Muslim forces. The campaign ended in disaster at Stilo.

Otto II led a campaign against the Byzantine Empire and the Emirate of Sicily in southern Italy. At the Battle of Stilo (or Cape Colonna), his army was ambushed and defeated by a Muslim coalition. Otto barely escaped, and the defeat weakened imperial authority in Italy.

Otto II died unexpectedly on December 7, 983, in Rome, possibly from malaria. He was only 28 years old. His death left his three-year-old son, Otto III, as heir, leading to a regency and a period of instability in the Holy Roman Empire.