NOTOC Year 1506 (MDVI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. January 14 – The classical statue of Laocoön and His Sons is unearthed in Rome. On the recommendation of Giuliano da Sangallo and Michelangelo, Pope Julius II purchases it, and places it on public display in the Vatican a month later. January 22 – The Swiss Guard arrives at the Vatican, to serve as permanent ceremonial and palace guards under Pope Julius II. February 9 – Henry, Prince of Wales is made a Knight of the Golden Fleece by Maximilian I, Holy Roman Emperor. February 15 – Iye Roy Mackay, Chief of Scotland's Clan Mackay, records his 1504 grant of six lands in what is now the County Sutherland, and starts a feud with Euphemia II, Countess of Ross. March – March 16 – The Battle of Cannanore is fought off the coast of India between Portugal's fleet (commanded by Lourenço de Almeida) and the fleet of the Zamorin of Calicut, with hundreds of vessels, and 3,000 of the Muslim troops are killed. March 30 – King Vladislaus II of Hungary and Maximilian I, Holy Roman Emperor sign a treaty to arrange the marriage of Vladislaus's daughter and Maximilian's son. April 18 – Pope Julius II lays the foundation stone of the new (current) St. Peter's Basilica in Rome, replacing the Old St. Peter's Basilica. April 19 – The Lisbon Massacre begins in Portugal with three days of violence in which thousands of Jews are tortured and killed by Catholics. April 30 – Malus Intercursus, a treaty between King Henry VII of England and Duke Philip IV of Burgundy, is signed. May 4 – Badi' al-Zaman Mirza becomes the new Emir of the Timurid Empire (now part of Afghanistan) after the death of his father, Sultan Husayn Bayqara, who died after a reign of 37 years. May 28 – Emperor Moctezuma II of Mexico's Aztec Empire subdues a rebellion in Zozollan, east of Achiutia, then kills the prisoners of war as a sacrifice to the gods. June 15 – Mahmud Shah II begins a 41-year reign as the Sultan of Kedah, a Muslim kingdom on the Malay Peninsula, on the death of his father, Adilin I.