List of resignations from government
== 18th century == 1776 – George Clinton, Continental Congressman (July 8), resigned to fight in the American Revolutionary War. 1780 – Elbridge Gerry, Continental Congressman (February 19) 1793 – Thomas Jefferson, United States Secretary of State (December 31), after becoming disillusioned with the Washington administration.
Source: Wikipedia — List of resignations from government (CC BY-SA 4.0)