Diary of John Quincy Adams, volume 2
Went out in the morning with young Quincy,1 and My brother Tom, on a shooting party: we went down on the marshes and had very good sport.
Lost the afternoon in idleness: Charles went over to Weymouth.
Probably Josiah Quincy III, a classmate of TBA's, later a congressman, mayor of Boston, and president of Harvard (Robert A. McCaughey, Josiah Quincy, 1772–1864: The Last Federalist, Cambridge, 1974).