#25905 John Frederick Herring (1795-1865)

The picture has something of this: mammal, cavalry, horse, mare, livestock, farm, equine, stallion, equestrian, pasture, animal, seated, two, mane, people, mustang, stable, agriculture.
Perhaps it’s a painting of a brown horse standing next to a horse laying on a bed of hay and a cow laying on the ground in front of it.