1John Armstrong to Thomas Jefferson, 1 March 1819 (Jefferson Papers)
When I last had the pleasure of hearing from you , you had determined to decline the executorship of Gen: Kosciusko ’s will and I have since learned, thro’ M r Wirt , that in persuance of his advice , a gentleman of your neiborhood, M r John Hartwell Cocke of Fluvianna County , had qualified, under the laws of Virginia , as administrator.