Venne, Adriaen Pietersz. van de – Prins Maurits vergezeld door zijn twee broeders, Frederik V, keurvorst van de Palts en enkele graven van Nassau te paard, 1625 Rijksmuseum: part 1

The picture has something of this: people, lid, cavalry, veil, man, group, woman, wear, cowboy, mammal, weapon, herder, cowman, skirmish, seated.
Perhaps it’s a painting of a group of people riding on the backs of white horses in front of a crowd of men and women in period clothing and hats.