Year 1518 (MDXVIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. Exceptions France In France, the year 1518 lasted from 4 April 1518 to 23 April 1519. Since Constantine (around year 325) and until the year 1565, the year was reckoned as beginning at Easter. For instance, the will of Leonardo da Vinci, drafted in Amboise on 23 April 1519, shows the legend "Given on the 23rd of April of 1518, before Easter". See Wikisource "1911 Encyclopædia Britannica/Easter" Events <onlyinclude> January–June April 18 – The widowed Sigismund I the Old, King of Poland and Grand Duke of Lithuania, marries Milanese noblewoman Bona Sforza in Wawel Cathedral and she is crowned as Queen consort of Poland. May 26 – A transit of Venus occurs. July–December July – Dancing plague of 1518: A case of dancing mania breaks out in Strasbourg, in which many people die from constant dancing. August – Construction of the Manchester Grammar School is completed in England. October 3 – The Treaty of London temporarily ensures peace in Western Europe. Date unknown The Rajput Mewar Kingdom under Rana Sanga achieves a major victory over Sultan Ibrahim Lodi of Delhi. A swarm of tropical fire ants devastates crops on Hispaniola. Erasmus publishes his Colloquies. Henricus Grammateus publishes Ayn neu Kunstlich Buech in Vienna, containing the earliest printed use of plus and minus signs for arithmetic. The remnants of The Abbasid Caliphate (stationed in Egypt under the Mamluk Sultanate (Cairo)) hands over the title of caliph to the Ottoman Empire that had conquered Constantinople in 1453, 65 years earlier Births February 2 Johann Hommel, German astronomer and mathematician (d. 1562) Godfried van Mierlo, Dutch Dominican friar and bishop (d. 1587) February 7 – Johann Funck, German theologian (d. 1566) February 13 – Antonín Brus z Mohelnice, Moravian Catholic archbishop (d. 1580) February 20 – Georg, Count Palatine of Simmern-Sponheim, (d. 1569) February 21 – John of Denmark, Danish prince (d. 1532) February 28 – Francis III, Duke of Brittany, Duke of Brittany (d. 1536) March 8 – Sidonie of Saxony, Duchess of Brunswick-Calenberg (d. 1575) April 22 – Antoine de Bourbon, father of Henry IV of France (d. 1562) July 3 – Li Shizhen, Chinese physician, pharmacologist and mineralogist (d. 1593) August 8 – Conrad Lycosthenes, Alsatian humanist and encyclopedist (d. 1561) September/October – Tintoretto, Italian painter (d. 1594) November 26