Edward Lascelles, Baron Harewood, 1st Earl of Harewood (1740-1820) John Hoppner (1758-1810)

The picture has something of this: people, portrait, wear, outerwear, jacket, facial expression, veil, outfit, leader, woman, lid, necklace, side view, jewelry, profile, music.
Perhaps it’s a painting of a man with white hair wearing a black coat and a white collared shirt with a white ruffle on the side of his neck.