Year 1381 (MCCCLXXXI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events January–December March 14 – Chioggia concludes an alliance with Zadar and Trogir against Venice, which becomes changed in 1412 in Šibenik. June 12 – Peasants' Revolt: In England, rebels from Kent and Essex, led by Wat Tyler and Jack Straw, meet at Blackheath. There the rebels are encouraged by a sermon, by renegade priest John Ball. June 14 – Peasants' Revolt: Rebels destroy John of Gaunt's Savoy Palace in London and storm the Tower of London, beheading Simon Sudbury, who is both Archbishop of Canterbury and Lord Chancellor, and also Robert Hales, Lord High Treasurer. King Richard II of England (age 14) meets the leaders of the revolt and agrees to reforms such as fair rents and the abolition of serfdom. June 15 – Peasants' Revolt: During further negotiations, Wat Tyler is murdered by the King's entourage. Noble forces subsequently overpower the rebel army. The rebel leaders are eventually captured and executed and Richard II revokes his concessions. The revolt is discussed in John Gower's Vox Clamantis and Froissart's Chronicles. August – Kęstutis overthrows his nephew, Jogaila, as Grand Duke of Lithuania. Jogaila is allowed to remain as governor of eastern Lithuania. This marks the beginning of the Lithuanian Civil War (1381–84). Date not known Due to Joanna I of Naples' support for Antipope Clement VII, Pope Urban VI bestows Naples upon Charles of Durazzo. With the help of the Hungarians, Charles advances on Naples and captures Joanna. James of Baux, the ruler of Taranto and the Latin Empire, claims the Principality of Achaea after Joanna's imprisonment. After a naval battle, Venice wins the three-year War of Chioggia against Genoa. The Genoans are permanently weakened by the conflict. Hajji I succeeds Alah-ad-Din Ali as Mamluk Sultan of Egypt. The Egyptian government continues to be controlled by rebel leader Barquq. Timur conquers east Persia, ending the rule of the Sarbadar dynasty. Sonam Drakpa deposes Drakpa Changchub as ruler of Tibet. The Ming dynasty of China annexes the areas of the old Kingdom of Dali, in modern-day Yunnan and Guizhou provinces, inhabited by the Miao and Yao peoples. Hundreds of thousands of Chinese (including military colonists) will migrate there from the rest of China. In Ming dynasty China, the lijia census registration system begun in 1371 is now universally imposed, during