Nieulandt, Adriaen van (Flemish, 1587-1658) 2 Flemish painters

The picture has something of this: people, lid, cavalry, entertainment, famous, seated, event, wear, pop, pants, mammal, seat, veil, fame, group, man, cowboy, person.
Perhaps it’s a painting of a man and a woman standing next to each other with a white horse in the foreground and a black and white.