It is one of eight years (CE) to contain each Roman numeral once (1000(M)+500(D)+100(C)+(-10(X)+50(L))+(-1(I)+5(V)) = 1644). Events January–March January 22 – The Royalist Oxford Parliament is first assembled by King Charles I of England. January 26 – First English Civil War – Battle of Nantwich: The Parliamentarians defeat the Royalists, allowing them to end the 6-week Siege of Nantwich in Cheshire, England. January 30 – Dutch explorer Abel Tasman departs from Batavia in the Dutch East Indies (now Jakarta in Indonesia) on his second major expedition for the Dutch East India Company, to maps the north coast of Australia. Tasman commands three ships, Limmen, Zeemeeuw and Braek, and returns to Batavia on August 4 with no major finds. Battle of Ochmatów: Polish–Lithuanian Commonwealth forces under hetman Stanisław Koniecpolski secure a substantial victory over the horde of Crimean Tatars, under Tugay Bey. February 5 – The first livestock branding law in America is passed in Connecticut. March 24 – In England, Roger Williams is granted an official grant for his Rhode Island Colony, allowing the establishment of a general assembly. April–June April 18 – Opchanacanough leads the Powhatan Indians in an unsuccessful uprising against the English at Jamestown. Although 300 of the English colonists are slain, the settlers pursue Opchanacanough, who is imprisoned in Jamestown for the rest of his life. This is the last such Indian rebellion in the region. April 25 – A popular Chinese rebellion led by Li Zicheng sacks Beijing, prompting Chongzhen, the last emperor of the Ming Dynasty, to commit suicide. May 6 – Johan Mauritius resigns as Governor of Brazil. May 25 – Ming general Wu Sangui forms an alliance with the invading Manchus, and opens the gates of the Great Wall of China at Shanhaiguan Pass, letting the Manchus through, towards the capital Beijing. May 26 – Battle of Montijo: The Kingdom of Portugal is victorious over Habsburg Spain, in the first major action between the two nations during the Portuguese Restoration War. May 27 – Battle of Shanhai Pass: The Manchu Qing Dynasty and Wu Sangui gain a decisive victory, over Li Zicheng's Shun Dynasty. June 3 – Li Zicheng proclaims himself emperor of China. June 6 – The invading Qing army, with the help of Ming general Wu Sangui, captures Beijing in China, marking the beginning of Manchu rule over the Chinese mainland. June 11 – During the English Civil War, Prince