Top: 1764 Infanta Maria Luisa by Anton Rafael Mengs (Kunsthistorisches Museum - Wien, Austria). From Animus Mirabilis' photostream on flickr; erased spots w Pshop 1146X1474 @72 585kj.
Second row left: 1764 Mary Anne Colmore by Francis Cotes (Worthing Museum and Art Gallery - Worthing, West Sussex. UK). From artuk.org 1496X1898 @72 4.1Mp.
Second row right: 1764 Lady Amelia Darcy, 9th Baroness Conyers by François Hubert Drouais (Bowes Museum - Durham, North East England, UK). From Wikimedia 1579X1899 @72 893kj.
Third row: 1764 Marianne Camasse, Countess of Forbach, morganatic wife of Christian IV by Johann Christian Mannlich (private collection). From Wikimedia; enlarged by half 1022X861 @96 235kj.
Fourth row: 1764 Mary, Countess of Howe by Thomas Gainsborough (Kenwood House - Hampstead, London, UK). From mfah.org/blogs/inside-mfah/characters-kenwood-mary-countess-howe 951X1350 @96 262kj
Fifth row left: 1764-1765 Elizabeth Wrottesley, later Duchess of Grafton by Thomas Gainsborough (National Gallery of Victoria - Melbourne, Victoria, Australia) Google Art Project via Wikimedia; blurred bacgrounf to erase cracks 3930X5152 @38 6.8Mj.
Fifth row right: 1764 Mary Wrottesley by Thomas Gainsborough (location ?). From pinterest.at/heritagerose/painting/; fixed lower left corner area and halfway up left side with Photoshop to remove a veiling reflection 2151X2669 @72 1.3Mj.
Sixth row: 1764 Mrs Abington as The Comic Muse, by Sir Joshua Reynolds (Waddesdon Manor - Waddesdon, Buckinghamshire, UK). From Wikimedia 2217X3537 @300 1.3Mj.
Seventh row left: 1764 Madame Lalive de Jully by Joseph Ducreux (Musée Antoine Lécuyer - Saint-Quentin, Aisne, Hauts-de-France, France) photo - Mathieu Rabeau. From Réunion des Musées nationaux Web site; enlarged to fit screen 2380X2872 @144 7.1Mp.
Seventh row right: 1762-1764 (between) Miss Nelly O'Brien by Sir Joshua Reynolds (Wallace Collection - London, UK). From wsimag.com/wallace-collection/artworks/58035 915X1173 @300 427kj.