But in those pre-photography days there was plenty of demand for portraits, and Reynolds and Gainsborough could not satisfy it by themselves. There were many other artists at work in that field, some competent, others not so much. One of the fairly competent ones was John Opie (1761-1807) who died young and was buried next to Reynolds in Westminster Abbey, a sign of the esteem he was held in his day.
I sheepishly admit that I was ignorant of Opie until I noticed a portrait by him that was used as the cover illustration for a book published by Barnes & Noble. So I did a little research, turning up biographical information here and here. I also discovered plenty of images of his works on the Internet, a few of which are presented below.
He tended to place his subjects against dark backgrounds, giving his portraits a dramatic quality that probably helped distract from the fact that his drawing was sometimes slightly flawed. That said, Opie was better than most of his competitors.