The House of Obizzi, which claimed descent from the Frankish Counts of Burgundy, was a prominent Italian noble family of Padua, who amassed great political power and wealth as feudatories of the Este, and is noted as early as the eleventh century. The Marquesses "degli Obizzi del Catajo", ending with the death in 1805 of marquess Tommaso degli Obizzi, were the heads of the great Guelf family.