Boniface III, son of Tedald of Canossa and the father of Matilda of Tuscany, was the most powerful north Italian prince of his age. By inheritance he was count of Brescia, Canossa, Ferrara, Florence,
Miniature of Boniface from the early twelfth-century manuscript of Donizo's Vita Mathildis (Codex Vat. Lat. 4922, fol. 28v.). The script down the side reads: Te redimat Sothér Bonifaci marchio duxque (May the Saviour redeem you Boniface, duke and margrave).