Lord Rivers Roan Mare In A Landscape Jacques-Laurent Agasse (1767-1849)

The picture has something of this: mammal, cavalry, horse, farm, mare, stallion, animal, equestrian, livestock, equine, pony, stable, barn, seated, mustang, bridle, people, paddock, mane.
Perhaps it’s a painting of a grey horse standing in front of a barn with a horse in the foreground and a person in the background.