May 10– In Italy's Republic of Florence, the republic is elevated to the level of an archdioese by Pope Martin V, who spent 18 months in Florence after being elected by the Council of Constance. In recognition of the hospitality accorded to him, Pope Martin names Bishop Amerigo Corsini to be the first Archbishop of Florence.
May 14– The Treaty of Torun ends the war between the Teutonic Knights and the Polish and Lithuanian Kingdom.
May 15–Raron affair: In Switzerland, The representatives of Lucerne, Uri and Unterwalden leave Zurich and halt further discussion with Bern after failing to win any concessions.
May 29– King Henry V of England is betrothed to Princess Catherine of Valois, the 17-year-old daughter of King Charles VI of France, in negotiations in the neutral site of Pontoise, north of Paris, during a halt to hostilities in the war between the two kingdoms. Henry and Catherine will marry a little more than a year later, on June 2, 1420.
July 3– The Ōei Invasion ends as the Korean soldiers withdraw from Tsushima and reassemble at Geoje Island.
July 30– The first defenestration of Prague occurs in the Kingdom of Bohemia when a mob led by Jan Želivský storms the Town Hall and kills several members of the town council by throwing them out of a window.
August 17–Siege of Ceuta: After four days of battle, the Portuguese defenders of the city of Ceuta are able to force a retreat of invaders from Morocco.
August 24– King Henry V of England directs the members of the House of Commons and the House of Lords to assemble at Westminster by October 16.
October 16– The first session, in almost two years, of the English Parliament is opened by King Henry V. The House of Commons re-elects Roger Flower as its speaker.
November 13– The 1419 session of the English Parliament closes after four weeks.
November 24– The Timurid ruler of Persia, Mirza Shahrukh (r. 1404–1447), sends a large embassy to the court of Emperor Cheng Zu of China. The group arrives in China on 29 August 1420. One of the Persian envoys, Ghiyāth al-dīn Naqqāsh, keeps a diary of his travels throughout China, which soon becomes widely known throughout Iranian and the Turkic Middle East, thanks to its inclusion into historical works by Hafiz-i Abru, and Abdur Razzaq. Naqqash writes about China's wealthy economy and huge urban markets, its efficient courier system as compared to that in Persia, the hospitality of his hosts at the courier stations in providing comfortable lodging and food, and the fine luxurious goods and craftsmanship of the Chinese.
↑C.E. Bosworth, The History of the Saffarids of Sistan and the Maliks of Nimruz (247/861 to 949/1542-3) (Costa Mesa, California: Mazda Publishers, 1994)
↑Angelo Ascani (1965). Montone: La patria di Braccio Fortebracci. pp.47–48.
↑Hikoichi Yajima (1974). A Facet of the Commercial Interactions in the Indian Ocean during the 15th Century: On the Visit of a Division from Zheng He's Expedition to Yemen.
↑Sen, Tansen (2016), The impact of Zheng He's expeditions on Indian Ocean interactions, p.619
↑Jeronimo Dias Leite, Descobrimento da Ilha da Madeira e Discurso da Vida e Feitos Dos Capitães da dira Ilha (Discovery of the Island of Madeira and discourse on the life and deeds of the Captains of the said Island) (1579, reprinted by Coimbra, 1947, with introduction and notes by João Franco Machado)
↑Chisholm, Hugh, ed. (1911). "Wenceslaus" . Encyclopædia Britannica. Vol. 28 (11th ed.). Cambridge University Press. pp. 517–518.
↑Prince Stephen Lazarovich-Hrebelianovich and Eleanor Calhoun, Princess Lazarovich-Hrebelianovich, The Servian People: Their Past Glory and Their Destiny (Charles Scribner's Sons, 1910) p.530
123Abru, Hafiz (1970), A Persian Embassy to China, being an extract from Zubdatu't tawarikh of Hafiz Abru, New York: Paragon Book Reprint Corp., p.6. Translated by K.M. Maitra, with introduction by L. Carrington Goodrich.