Year 1528 (MDXXVIII) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. Events January–June January 12 – Gustav I of Sweden is crowned king of Sweden, having already reigned since his election in June 1523. February Peasant uprising in Dalarna, Sweden: The rebel campaign fails, and the rebel leader, later known as Daljunkern, flees to Rostock. Diego García de Moguer explores the Sierra de la Plata along the Río de la Plata, and begins to travel up the Paraná River. Paracelsus visits Colmar in Alsace. April 28 – Battle of Capo d'Orso: The French fleet, under mercenary captain Filippino Doria, crushes the Spanish squadron trying to run the blockade of Naples. May (end) – The fourth major outbreak of the sweating sickness appears in London, rapidly spreading to the rest of England and, on this occasion, to northern Europe. July–December September 12 – Andrea Doria defeats his former allies, the French, and establishes the independence of Genoa. October 3 – Álvaro de Saavedra Cerón arrives in the Maluku Islands. October 13 – Cardinal Thomas Wolsey founds a college in his birthplace of Ipswich, England, which becomes the modern-day Ipswich School (incorporating institutions in the town dating back to 1299). October 20 – The Treaty of Gorinchem is signed between Charles V, Holy Roman Emperor, and Charles, Duke of Guelders. November 6 – Spanish conquistador Álvar Núñez Cabeza de Vaca and his companions become the first known Europeans to set foot on the shores of what is present-day Texas. Date unknown Montenegro gains autonomy under Ottoman power. Spanish Conquistador Francisco de Montejo attempts an invasion of the Yucatán, but is driven out by the Maya peoples. Spain takes direct control of Acapulco. Bubonic plague breaks out in England. St George's Chapel in Windsor Castle is completed. Chateau Fontainebleau in France is begun. Michelangelo Buonarroti begins work on the fortifications of Florence. Baldassare Castiglione publishes The Book of the Courtier. In Henan province, China, during the mid Ming dynasty, a vast drought deprives the region of harvests for the next two years, killing off half the people in some communities, due to starvation and cannibalism. Paracelsus leaves Basel. Perak Sultanate and Johor Sultanate were established, both states being ruled by the sons of Mahmud Shah of Malacca. Births February 29 Domingo Báñez, Spanish theologian (d. 1604) Albert V, Duke of Bavaria (d. 1579) March