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In page Otto II, Holy Roman Emperor:

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Otto was a man of small stature, by nature brave and impulsive, and by training an accomplished knight. He was generous to the church and aided the spread of Christianity in many ways.[1] According to one of the chroniclers of the time, he was given the epithet of the "Red" when in 981 he invited the most troublesome of the Roman families to a banquet, and proceeded to butcher them at dinner.[2] More sympathetic chroniclers said that it was due to his reddish complexion.[citation needed] In fact, Otto is much more likely to have inherited the epithet from his half-uncle Conrad the Red, who died the year he was born and from whom he is also likely to have inherited some property.