Antoine-Jean Gros – Claude-Victor Perrin, Duke of Bellune, Marshall Victor (Maréchal de l’Empire) Château de Versailles

The picture has something of this: people, wear, gold, man, sword, portrait, costume, cape, royalty, Renaissance, castle, fantasy, veil, music.
Perhaps it’s a painting of a man in a white suit with a red and gold coat and a white feathered hat.