Major-General Sir Henry Willoughby Rooke John Hoppner (1758-1810)

The picture has something of this: people, portrait, wear, jacket, necklace, royalty, woman, coat, lid, brunette, outerwear, man, veil, facial expression, dress, choker.
Perhaps it’s a close up of a painting of a man wearing a red coat and a white collared shirt with a feathered hat on his left hand.