Isabella Stanhope (1748–1819), vicomtesse Molyneux, senere grevinne av Sefton - Thomas Gainsborough Source: Isabella Stanhope (1748–1819), vicomtesse Molyneux, plus tard comtesse de Sefton - Thomas Gainsborough

Isabelle Franks (ca. 1769/1770–1855) - Thomas Gainsborough Source: Isabelle Franks (vers 1769/1770–1855) - Thomas Gainsborough

Isabelle Thorold de Syston (død i 1803) - Joshua Reynolds

Isabelle, vicomtesse Molyneux, senere grevinne av Sefton - Thomas Gainsborough Source: Isabelle, vicomtesse Molyneux, plus tard comtesse de Sefton - Thomas Gainsborough

Jacob Bouverie (1694–1761), premier vicomte de Folkestone et premier président de la Society of Arts (d'après Thomas Hudson) - Thomas Gainsborough

James (« Janus ») Modyford Heywood (1732-1798) - Thomas Gainsborough Source: James (« Janus ») Modyford Heywood (1732-1798) - Thomas Gainsborough

James Boswell - Joshua Reynolds

James Buller de Shillingham og Morval, parlamentsmedlem (1717–1765) - Joshua Reynolds

James Coutts (1733 - 1778) - Joshua Reynolds

James Eliot (1718–1742) - Joshua Reynolds

James Hamilton, 8. greve av Abercorn - Thomas Gainsborough Source: James Hamilton, 8e comte d'Abercorn - Thomas Gainsborough

James Macardell - Joshua Reynolds

James Macpherson (1736–1796) - Joshua Reynolds

James Maitland (1759–1839), 8. jarl av Lauderdale - Thomas Gainsborough Source: James Maitland (1759–1839), 8e comte de Lauderdale - Thomas Gainsborough

James Maitland, 7. greve av Lauderdale - Joshua Reynolds

James Murray - Joshua Reynolds

James Paine, architecte et son fils, James - Joshua Reynolds

James Quin (1693-1766) - Thomas Gainsborough Source: James Quin (1693-1766) - Thomas Gainsborough

James « Ossian » Macpherson, parlamentsmedlem (1736-1796) - Joshua Reynolds

Jane Barton - Joshua Reynolds

Jane Fleming, senere grevinne av Harrington - Joshua Reynolds

Jane Hamilton, ektefelle til den 9. Lord Cathcart, og datteren hennes Jane, fremtidig hertuginne av Atholl - Joshua Reynolds

Jean Hope, 1739 - 1785. - Joshua Reynolds