Portrait of a Gentleman, Half-Length, in a Brown and White Stock a Red Curtain Behind John Hoppner (1758-1810)

The picture has something of this: people, portrait, wear, woman, lid, outerwear, veil, jacket, jewelry, coat, leader, necklace, royalty, music, writer.
Perhaps it’s a close up of a painting of a man in a brown coat with a white ruffle on his neck and a red curtain in the background.