24. Sir John Henderson of Fordell, by John Brown. 1782 (Scottish National Portrait Gallery, Edinburgh)
Attributed works:
25. Sir John Henderson of Fordell, by Gavin Hamilton. c.1778 (Real Academia de Bellas Artes de San Fernando, Madrid)
Attributed works:
26. Douglas Hamilton, 8th Duke of Hamilton and 5th Duke of Brandon, with Dr John Moore and his son, by Gavin Hamilton. 1775-77 (Scottish National Portrait Gallery, Edinburgh)