Sir Isaac Newton By lingtif Jan 4, 1642 Sir Isaac Newton was born. Period: Jan 4, 1642 to Mar 31, 1727 1642-1727 Mar 13, 1666 He begins to discover the idea of gravity. Jan 6, 1670 He works on the mathematician of gravitation Feb 1, 1684 Sir Isaac Newton does research on planetary orbits. Nov 27, 1687 He publishes the first book of Principia. Mar 10, 1693 Sir Isaac Newton is plagued by depression and suffers a nervous breakdown. Jun 20, 1699 Newton was named Master of the Mint. Dec 25, 1703 He was made President of the Royal Society Apr 7, 1726 The last edition of the Principia was published. Mar 31, 1727 Sir Isaac Newton died and was buried in Westminster Abbey.