Adolf Ludvig Stjerneld (1755-1835) * Jakob Bjorck (1727-1793)

The picture has something of this: people, portrait, woman, wear, retro, veil, man, royalty, dress, Renaissance, crown, jewelry, wig, cape.
Perhaps it’s a portrait of a man in a black jacket with a white shirt and a blue and yellow scarf around his neck and a black leather jacket.