March 30 Prince Louis of Bourbon elected bishop of Liege April 7 Louis van Burbon becomes prince-bishop of Luik June 9 23rd recorded perihelion passage of Halley's Comet July 7 Though she had already been executed, Joan of Arc is acquitted July 22 Battle at Nandorfehervar (Belgrade): Hungarian army under Janos Hunyadi beats sultan Murad II December 5 Earthquake strikes Naples; about 35,000 die
