Born in 1503

Jan 11 Parmigianino an Italian Mannerist painter and printmaker active in Florence, Rome, Bologna, and his native city of Parma. His work is characterized by elongation of form and includes Vision of Saint Jerome and the Madonna with the Long Neck
Mar 10 Ferdinand I Holy Roman Emperor Holy Roman Emperor from 1558, king of Bohemia and Hungary from 1526, and king of Croatia from 1527 until his death. Before his accession, he ruled the Austrian hereditary lands of the Habsburgs in the name of his elder brother, Charles V, Holy Roman Emperor
Mar 22 Antonio Francesco Grazzini an Italian author.
Apr 18 Henry II of Navarre born at Sangüesa, was the King of Navarre from 1517, although his kingdom had been reduced to a small territory north of the Pyrenees by the Spanish conquest of 1512. Henry succeeded his mother, Queen Catherine, and her husband, King John III
May 1 Celio Secondo Curione an Italian humanist, grammarian and suspected antitrinitarian. He may have assisted or influenced Castellio in his anonymous tract appealing for religious tolerance
Jun 1 Wilhelm von Grumbach a German adventurer, chiefly known through his connection with the so-called “Grumbach Feud” , the last attempt of the Imperial Knights to prevail against the power of the territorial Princes of the Holy Roman Empire.
Jun 28 Giovanni della Casa a Florentine poet, writer on etiquette and society, diplomat, and inquisitor. He is celebrated for his famous treatise on polite behavior, Il Galateo overo de’ costumi. From the time of its publication, this courtesy book has enjoyed enormous success and influence. In the eighteenth century, influential critic Giuseppe Baretti wrote in The Italian Library , "The little treatise is looked upon by many Italians as the most elegant thing, as to stile, that we have in our language."
Jun 30 John Frederick I Elector of Saxony Elector of Saxony and Head of the Protestant Confederation of Germany , "Champion of the Reformation".
Jul 23 Anne of Bohemia and Hungary sometimes known as Anna Jagellonica, Queen of the Romans , Bohemia and Hungary as the wife of King Ferdinand I, later Holy Roman Emperor.
Aug 12 Christian III of Denmark reigned as king of Denmark and Norway from 1534 until his death. He was the eldest son of King Frederick I and Anna of Brandenburg
Sep 20 Andrzej Frycz Modrzewski a Polish Renaissance scholar, humanist and theologian, called "the father of Polish democracy." His book De Republica emendanda was widely read and praised across most of Renaissance Europe.
Oct 24 Isabella of Portugal an Infanta of Portugal, by birth, and a Holy Roman Empress, Queen of Germany, Italy, Spain, Naples and Sicily, Duchess of Burgundy etc. as the spouse of Charles V, Holy Roman Emperor. She was the daughter of Manuel I of Portugal and Maria of Aragon. She served as regent of Spain during the absence of her spouse for long periods
Nov 17 Bronzino an Italian Mannerist painter from Florence. His sobriquet, Bronzino, in all probability refers to his relatively dark skin
Nov 19 Pier Luigi Farnese Duke of Parma the first Duke of Parma, Piacenza and Castro, from 1545 to 1547.
Dec 21 Nostradamus a French apothecary and reputed seer who published collections of prophecies that have since become famous worldwide. He is best known for his book Les Propheties, the first edition of which appeared in 1555. Since the publication of this book, which has rarely been out of print since his death, Nostradamus has attracted a following that, along with much of the popular press, credits him with predicting many major world events. Most academic sources maintain that the associations made between world events and Nostradamus's quatrains are largely the result of misinterpretations or mistranslations or else are so tenuous as to render them useless as evidence of any genuine predictive power. Nevertheless, occasional commentators have successfully used a process of free interpretation and determined "twisting" of his words to predict an apparently imminent event. For example, in 1867 , Le Pelletier did so to anticipate either the triumph or the defeat of Napoleon III in a war that, in the event, begged to be identified as the Franco-Prussian War, while admitting that he could not specify either which or when