On 16 September of the same year the pope sent him as extraordinary legate to the Governments of Urbino, Ferrara, Venice, and Parma in order to obtain help against the Spanish troops who were occupying the Campagna and threatening Rome. In 1560, when Pope Pius IV determined to reopen the Council of Trent, Commendone was sent as legate to Germany to invite the Catholic and Protestant Estates to the council. He arrived in Vienna on 3 January 1561, and after consulting with Emperor Ferdinand, set out on 14 January for Naumburg, where the Protestant Estates were holding a religious convention, He was accompanied by Delfino, Bishop of Lesina, who had been sent as papal nuncio to Ferdinand four months previously and was still at the imperial court.
Commendone
Emperor Ferdinand