Dick and Charlie at Wherwell Priory George Percy Jacomb-Hood (1857-1930)

The picture has something of this: mammal, horse, cavalry, seated, mare, people, animal, equestrian, two, livestock, stallion, equine, bridle, stable, mane, racehorse, pasture, farm.
Perhaps it’s a painting of a man standing next to a brown horse in front of a white building.