October 10. October 10 is the 283rd day of the year (284th in leap years) in the Gregorian calendar; 82 days remain until the end of the year. Events Pre-1600 19 ??? The Roman general Germanicus dies near Antioch. He was convinced that the mysterious illness that ended in his death was a result of poisoning by the Syrian governor Gnaeus Calpurnius Piso, whom he had ordered to leave the province. 680 ??? The Battle of Karbala marks the martyrdom of Husayn ibn Ali. 732 ??? Charles Martel's forces defeat an Umayyad army near Tours, France. 1471 ??? Sten Sture the Elder, the Regent of Sweden, with the help of farmers and miners, repels an attack by King Christian I of Denmark. 1492 ??? The crew of Christopher Columbus's ship, the Santa Maria, attempt a mutiny. 1575 ??? Roman Catholic forces under Henry I, Duke of Guise, defeat the Protestants, capturing Philippe...