Manuel, Conde d'Ourem, infante of Portugal (1697-1766) was proposed in the 1730s as a compromise candidate for the Polish throne against the candidacy of Friedrich August III of Saxony or the pro-French Stanisław Leszczyński, father-in-law of the French king.
Although no one seriously considered supporting Ourem (when he went to St. Petersburg to offer himself as a potential husband for the Empress Anna, he was turned away with a nice sable coat) although he was well known to the courts of Austria and Russia, what if he had been accepted as a compromise candidate for the throne in Warsaw?