Donizo (also Domnizo, Donizone) of Canossa, was an Italian monk in the late eleventh and early twelfth centuries.
Donizo was born c.1071/2, perhaps at Canossa or at Parma. He became a monk at the Benedictine monastery of Sant’Apollonio of Canossa c.1086/7. By 1136 he was abbot of the monastery.
He composed several works in Latin, including the Enarratio Genesis, a fragmentary commentary on the Book of Genesis, of which 378 leonine verses remain.
His most famous work is the Vita Mathildis (Life of Matilda), written in leonine hexameters. 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. The Vita Mathildis was written between 1111 and 1115. It was completed shortly after Matilda died in July 1115 and was thus hastily re-dedicated to Empress Matilda.
The Vita Mathilidis is an important source not only on Matilda and her family members, but on Gregorian Reform and the Investiture Controversy more generally.
There are many later medieval epitomes (or versions) of Donizo’s Life of Matilda.
P. Golinelli, ‘Donizone (Domnizo, Donizo)’, in Dizionario Biografico degli Italiani - Volume 41 (1992)