the marriage bargain he struck with charles ii of naples for his youngest daughter, beatrice, was notorious in his day and among chroniclers afterwards: dante asserted that charles "was seen to sell his own daughter and to bargain over her as corsairs do over slaves." the nuptial agreement survives in the este archives: azzo granted his father-in-law 51,000 florins, to be invested in lands in the regno and in appropriate places in the marquisate of este, and promised to establish primogeniture in the este holdings, contrary in fact to estense traditions, and explicitly disinheriting azzo's brother francesco. the wedding was solemnized. modena and reggio rebelled in 1306 over an attempt to assign them to beatrice as part of the bride price, a custom that had been superseded in italy by the dowry.