William Henry Cavendish-Bentinck (1738–1809), 3rd Duke of PortlandJohn Powell (active 1769–1785)
National Trust, Dunham Massey
Lieutenant-General Henry Herbert (1734–1794), 10th Earl of Pembroke, Lady Elizabeth Spencer (d.1831), Countess of Pembroke and Their Only Son George Augustus Herbert (1759–1827), Later 11th Earl of PembrokeJohn Powell (active 1769–1785) (attributed to)