Oct 8 Chinese assault on Diestpoort Batavia Oct 9 Dutch governor general Adriaen Valckenier allows murder of 8,000 Chinese inhabitants of Batavia Oct 17 Ivan VI becomes Tsar of Russia Oct 20 Maria Theresa became ruler of Austria, Hungary & Bohemia Oct 28 Ivan VI becomes Tsar of Russia [OS=Oct 17] Share On Facebook Share On Twitter 1739 Historical Events 1741