[2] He later served as papal legate to Frederick III, Holy Roman Emperor and to Matthias Corvinus, King of Hungary to encourage them to participate in a crusade against the Ottoman Empire.
[2] Pope Innocent VIII put him in charge of managing relations with ambassadors to the Holy See.
[2] In the consistory of March 9, 1489, Pope Innocent VIII made him a cardinal priest.
[2] He received the red hat on March 14, 1489 with the titular church of Santi Giovanni e Paolo.
[1] On June 3, 1489, he became apostolic administrator of the metropolitan see of Olomouc, a post he held until February 8, 1492.