Mifflin, Thomas

Thomas Mifflin

b. 10 Jan 1744, Philadelphia, Pennsylvania
d. 20 Jan 1800, Lancaster, Pennsylvania

Title: President
Term: 5 Nov 1788 - 11 Nov 1789
Chronology: 5 Nov 1788, elected, joint session of the Supreme Executive Council and General Assembly, Assembly chamber, State House, Philadelphia [1]
5 Nov 1788, took an oath of office as President, session of the Supreme Executive Council, Council chamber, State House, Philadelphia [2]
Term: 11 Nov 1789 - 21 Dec 1790
Chronology: 11 Nov 1789, elected, joint session of the Supreme Executive Council and General Assembly, Assembly chamber, State House, Philadelphia [3]
  11 Nov 1789, took an oath of office as President, session of the Supreme Executive Council, Council chamber, State House, Philadelphia [4]
  21 Dec 1790, ceased to exercise the duties of office in accordance with Schedule II of the Constitution of 1790 [5]
Other offices: President of Congress (3 Nov 1783 - 31 Oct 1784) [see details]
  Governor of the Commonwealth of Pennsylvania (21 Dec 1790 - 17 Dec 1799)
Biography:
Originated from a Quaker family; graduated from the Academy and College of Philadelphia with bachelor degree (1760); learned the merchant trade in the business of William Coleman; after returning in 1765 from a tour of Europe, he entered into business with his brother George; became a member of the American Philosophical Society (1765-1799); entered politics as a member of the Provincial Assembly of Pennsylvania (1772-1774); was elected a delegate from Pennsylvania to the first "Continental" Congress (1774); chosen to represent Pennsylvania again in the second "Continental" Congress (1775); elected to the Provincial Assembly of Pennsylvania in 1775 but requested that his election be "considered as void" (approved 24 Nov 1775); made major and chief aide-de-camp to George Washington (1775); occupied the position of the Quartermaster General of the Continental Army on 14 Aug 1775 and was appointed major general by the Congress (19 Feb 1777); served as a member of board of war from 7 Nov 1777; resigned as major general (accepted by the Congress 25 Feb 1779); was a trustee of the University of Pennsylvania (1778-1791); re-elected a delegate to Congress (1782-1784); elected President of Congress, assuming the office 13 Dec 1783; chaired the session of 23 Dec 1783 when Washington appeared before Congress and resigned his commission as commander-in-chief; served as Speaker of the General Assembly of Pennsylvania (27 Oct 1785 - 27 Sep 1786, 26 Oct 1786 - 29 Sep 1787, 24 Oct 1787 - 4 Oct 1788); delegate to the Federal Constitutional Convention (1787); served as President of the Supreme Executive Council of Pennsylvania (5 Nov 1788 - 21 Dec 1790); President of the Convention (25 Nov 1789 - 2 Sep 1790) which framed the Constitution of Pennsylvania; defeated Arthur St. Clair at the first election of the Governor of Pennsylvania (1790); was re-elected in 1793 and 1796, serving as the Governor of the Commonwealth of Pennsylvania (21 Dec 1790 - 17 Dec 1799); member of the House of Representatives of Pennsylvania (1799-1800).
Biographical sources: Biographical Directory of the United States Congress (2005).

[1] Pennsylvania Archives - Colonial Records, 15:584; General Assembly Minutes, 1788, 11-12.
[2] Pennsylvania Archives - Colonial Records, 15:585.
[3] Pennsylvania Archives - Colonial Records, 16:218; General Assembly Minutes, 1789, 25-26.
[4] Pennsylvania Archives - Colonial Records, 16:218.
[5] The Constitution of the Commonwealth of Pennsylvania was ratified by the Convention and publicly proclaimed 2 Sep 1790; Schedule II: provides "That the President and Supreme Executive Council shall continue to exercise the executive authority of this commonwealth, as heretofore, until the third Tuesday of December next [21 Dec 1790]; but no intermediate vacancies in the Council shall be supplied by new elections." ["Minutes of the Second Session of the Convention of the Commonwealth of Pennsylvania, which commenced at Philadelphia, on Monday the ninth day of August, in the year of our Lord one thousand seven hundred and ninety", 211-222]
Image: portrait by Charles Willson Peale (1784).
Last updated on: 17 Jul 2009 01:40:55