Jean-Baptiste Charpentier the Elder – Louis-Jean-Marie de Bourbon, duc de Penthièvre, and his Daughter, Louise-Adelaïde, Mademoiselle de Penthièvre, the future duchesse of Orléans, in a Garden Château de Versailles

The picture has something of this: people, wedding, woman, dress, bride, wear, princess, veil, two, group, groom, love, man, girl, gown, ceremony, marriage, royalty.
Perhaps it’s a painting of a man and a woman sitting next to each other on a bench in a park with a fountain and a statue in the background.