Bree, Mattheus Ignatius van – Ongeïdentificeerde historische voorstelling., 1815-1830 Rijksmuseum: part 4

The picture has something of this: people, group, woman, dress, child, man, priest, ceremony, wedding, many, castle, royalty, leader, wear, room, performance.
Perhaps it’s a painting of a group of people standing in front of a man in a white dress and a woman in a pink.