George I at Newmarket, 4 or 5 October, 1717 John Wootton (1682-1764)

The picture has something of this: group, cavalry, people, many, mammal, seated, landscape, herder, transportation system, tree, man, vehicle, recreation, cattle.
Perhaps it’s a painting of a large group of people on horses and carriages in a field with a town in the distance and a cloudy sky in the background.