Otto I. "The Great," emperor of the west. Born in 912, son of Henry the Fowler. Was chosen King of Germany in 936. In 951, was summoned to aid the Italians against Berengar, and married Adelheid, widow of King Lothair. Routed the Hungarians near Augsburg in 955. In 962 was crowned emperor at Rome by Pope John XII. He subsequently deposed John, and set up Leo VIII in his stead. He extended his dominion over nearly the whole of Italy, reestablished the Western Empire, and made many reforms in church and state. Died 973.

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