Washington's Private Seal, 1783
Washington's Private Seal incorporates the same design which can be found in Washington's Arms. The coat of arms of George Washington, President of the United States of America from 1789 to 1797, were first used to identify the family in the twelfth century, when one of George Washington's ancestors took possession of Washington Old Hall, then in County Durham, in north-east England.
Benson John Lossing, ed. Harper's Encyclopedia of United States History (vol. 10) (New York, NY: Harper and Brothers, 1912)