1. The Senate received this nomination on this date and consented on 30 May (Senate Executive Journal, description begins Journal of the Executive Proceedings of the Senate of the United States of America: From the commencement of the First, to the termination of the Nineteenth Congress. Vol. 1. Washington, D.C., 1828. description ends 212–13).

John Quincy Adams never served as minister to Portugal. For his continuance as minister to the Netherlands, see Timothy Pickering to Adams, 11 June, in DNA: RG 59, Diplomatic and Consular Instructions. President John Adams nominated his son as minister to Prussia on 20 May 1797 (see Senate Executive Journal, description begins Journal of the Executive Proceedings of the Senate of the United States of America: From the commencement of the First, to the termination of the Nineteenth Congress. Vol. 1. Washington, D.C., 1828. description ends 240; see also GW to John Adams, 20 Feb. 1797, in MHi: Adams Papers, and Bemis, John Quincy Adams and American Foreign Policy, description begins Samuel Flagg Bemis. John Quincy Adams and the Foundations of American Foreign Policy. New York, 1965. description ends 86–89).