Giovanni Battista Pittoni the Younger (1687-1767) – Polyxena Led as a Sacrifice to the Ghost of Achilles Part 4 Louvre

The picture has something of this: people, group, baroque, Renaissance, saint, man, woman, reclining, veil, god, kneeling, Mary, allegory, wear.
Perhaps it’s a painting of a group of people standing in front of a fountain with a man holding a sword in one hand and a woman in the other hand.