Diamond, with Dennis Fitzpatrick Up Benjamin Marshall (1768-1835)

The picture has something of this: cavalry, horse, seated, mammal, rider, equestrian, mare, people, competition, action energy, equine, saddle, race, man, animal, dressage, stallion, two.
Perhaps it’s a painting of a man riding on the back of a brown horse in a field with a pole in the foreground and a cloudy sky in the background.