Miss Jummy John Alfred Wheeler (1821-1903)

The picture has something of this: cavalry, horse, mammal, seated, equestrian, equine, mare, racehorse, action energy, competition, race, motion, rider, stallion, fast, livestock, animal.
Perhaps it’s a painting of a man riding on the back of a brown horse in a field with other horses in the distance and a cloudy sky in the background.