Shayer Sr William Harvesters Resting William Shayer (1787-1879)

The picture has something of this: cavalry, people, mammal, group, seated, man, skirmish, cowman, vehicle, herder, wear, weapon, war, veil, transportation system, recreation, soldier, two.
Perhaps it’s a painting of a group of people riding horses in a field with a dog on the side of the road.