There were many means of expressing a sitter's sense of Enlightenment in portraits. One of the most popular accessories a sitter used was their family. Family portraits in the 18th century weren't necessarily commissioned because the sitter wanted to immortalize their children or save money with a group portrait, it was a means of immortalizing yourself as a creature of Enlightenment. Of course, not everyone had selfish motives by getting a family portrait, but the rise in their popularity can be attributed to this trend. The painters who thought outside the box with the composition and the sitters' interactions with each other produced some of the greatest paintings in this genre. After all, anyone could snap a family
portrait at Sears but is that who celebrities go to when they want
theirs? No, they tend to want something creative that shows a hint of candour and love. The same concept went for artists in 18th century and it is what made painters, such as Joshua Reynolds. See why these painters made the big bucks:
Joshua Reynolds,
Georgiana, Duchess of Devonshire and Her Daughter, 1784

John Hoppner,
Harriet, Viscountess Duncannon and her Two Sons, 1787

George Romney,
Jane, Duchess of Gordon and her Son, the Marquis of Huntly, 1778

Joshua Reynolds,
Lady Cockburn and Her Three Eldest Sons, 1777

Joshua Reynolds,
Lady Smith and Children, 1787

George Romney,
The Gower Family, 1776-7

Joshua Reynolds,
Miss Cocks and Her Niece, 1789