Eriprando Madruzzo, was an Italian mercenary captain, he fought in which country, against the Turks at the service of Charles V, was ruler of both the Spanish Empire from 1516 and the Holy Roman Empire from 1519, as well as of the lands of the former Duchy of Burgundy from 1506?
Charles V, Holy Roman Emperor Charles V (Spanish: "Carlos" ; German: "Karl" ; Dutch: "Karel"; Italian: "Carlo" ) (24 February 1500 – 21 September 1558) was ruler of both the Spanish Empire from 1516 and the Holy Roman Empire from 1519, as well as of the lands of the former Duchy of Burgundy from 1506. He voluntarily stepped down from these and other positions by a series of abdications between 1554 and 1556. Through inheritance, he brought together under his rule extensive territories in western, central, and southern Europe, and the Spanish colonies in the Americas and Asia. As a result, his domains spanned nearly four million square kilometers and were the first to be described as "the empire on which the sun never sets".
Juan Carvajal (cardinal) Juan Carvajal (Carvagial) (c. 1400 in Trujillo, Cáceres – 6 December 1469 in Rome) was a Spanish Cardinal. Though he began his career as a lawyer and judge in the papal administration, he spent most of his active life travelling as a diplomat in Germany and eastern Europe, attempting to arrange a crusade against the Ottoman Turks. He was particularly active in Bohemia and Hungary, where he also employed his powers to fight the Hussites. He was a mainstay in trying to preserve the institution of the Papacy from the Conciliarism of the Council of Basel.