Published as part of project Edition and Translation of the Orations of Enea Silvio Piccolomini / Pope Pius II ; In the spring of 1459, during a prolonged stay in Siena, Pope Pius II received a number of embassies from the rulers of Europe declaring obedience to the Apostolic See and to the new pope on behalf of their lord. One of the embassies was from the King of Portugal. In his short reply to the oration of the ambassadors, the pope touched upon five themes: the supremacy of the Roman Church, Pius’ own unworthiness for the exalted office, the merits of the king and his House, the pope’s gratitude for the king’s offer of aid to the crusade against the Turks, and the benevolence of pope and cardinals towards the king.