The Stables and Two Famous Running Horses belonging to His Grace, the Duke of Bolton James Seymour (1702-1752)

The picture has something of this: mammal, cavalry, people, indoors, seated, wear, motion, room, group, livestock, child, animal, horse, two, competition, furniture, pet, woman.
Perhaps it’s a painting of two horses and a dog in a stable with a woman in a red coat.