Donizo (also Domnizo, Donizone) of Canossa, was an Italian monk in the late eleventh and early twelfth centuries.
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The Life is divided into two books, the first of which entitled, De Principibus Canusinis (‘On the princes of Canossa’), concentrates on the ancestors of Matilda of Tuscany, and their possession of the castle of Canossa; the second book focuses on Matilda herself.