WYNKOOP, Henry (1737-1816)

WYNKOOP, HENRY, a Delegate and a Representative from Pennsylvania; born in Northampton Township, Bucks County, Pa., March 2, 1737; completed English and classical studies; member of the Pennsylvania Assembly in 1760 and 1761; associate justice of Bucks County Courts 1764-1777 and president judge 1777-1789; member of the committee of observation in 1774; delegate to the provincial conferences of July 15, 1774, and June 18, 1775; major of Bucks County Associated Battalions; member of the general committee of safety in 1776 and 1777; Member of the Continental Congress from 1779 to 1782; justice of the high court of errors and appeals from 1783 to 1789; elected to the First Congress (March 4, 1789-March 3, 1791); appointed associate justice of Bucks County, Pa., and served until his death in that county on March 25, 1816; interment in the graveyard of the Low Dutch Reformed Church, Richboro, Pa.

Bucks County Historical Society
Doylestown, PA
Papers: 1777-1806, 49 items.
Letters from Henry Wynkoop to Dr. Reading Beattie, of Fallsington, Pa., written while Wynkoop was a member of the first U.S. Congress in New York, which describes the organization of the first session, leading personalities, political questions, and other subjects; barracks supply account (Mar. 1777), letter from Newton, Pa., and list of people in charge of billeting the poor and in charge of stores in Bucks County, Pa. (1777); charge to the first grand jury delivered by Wynkoop (1777); certification to appraise the estate of Charity Bennet (1784); and receipt regarding the estates of Johnathan Duboise (1806).

Papers: In the W. W. H. (William Watts Hart) Davis. Papers, 1727-1905, 4.5 linear feet.
Correspondents include Henry Wynkoop.


Brooklyn Historical Society
Brooklyn, NY
Papers: March 12, 1788. Deed.
Finding aid in repository.


Historical Society of Pennsylvania
Philadelphia, PA
Papers: At least 5 letters (1789) in the Gratz collection.

Library of Congress
Manuscript Division
Washington, DC
Papers: 1778, 1 item.
Letter of Henry Wynkoop, 1778 August 10.


Smithsonian Institution Archives
Washington, DC
Papers: At least 1 item (1789) in the Hull collection of letters relating to the Adams family.

University of Pennsylvania Library
Rare Book and Manuscript Library Collections
Philadelphia, PA
Papers: 1787-1788, 2 letters.
The first letter from Henry Wynkoop is written to the Philadelphia Society for Promoting Agriculture on August 13, 1787, and concerns the use of plaster of Paris as a grass manure. The second letter from Henry Wynkoop is written to Samuel Powel on August 16, 1788, and concerns the Hessian fly.

  • Beatty, Joseph M., Jr. "The Letters of Judge Henry Wynkoop, Representative From Pennsylvania to the First Congress of the United States." Pennsylvania Magazine of History and Biography 38 (January 1914): 39-64, 183-205.