Lord Rivers and his friends Jacques-Laurent Agasse (1767-1849)

The picture has something of this: mammal, cowman, cavalry, seated, herder, people, livestock, cowboy hat, two, cowgirl, cattle, farm, veil, lid, horse, saddle, man, woman, desert.
Perhaps it’s a painting of a group of men on horses and dogs in a field with a dog on the ground and sheep on the other side of the road.