an Italian Roman Catholic cardinal, and Archbishop of Esztergom. He was a member of the House of Este. On May 16, 1511, he was among the cardinals who signed the appeal to the pope to speak at the schismatic Council of Pisa. However, his brother Alfonso later convinced him to abandon the schism, and the pope authorized him to return to Ferrara. In 1513 Ippolito moved again to Hungary but, when in his absence Leo X was elected pope, he returned again to his native city. On April 22, 1514, he and his family were pardoned for all their past anti-papal acts.
