Two Hunters with a Groom Jacques-Laurent Agasse (1767-1849)

The picture has something of this: cavalry, mammal, horse, equestrian, seated, equine, stallion, mare, animal, hayfield, farm, pony, two, livestock, motion, mane, gallop, grass, action energy, racehorse.
Perhaps it’s a painting of a man in a top hat standing next to a horse and another.