Portrait of William Thomas Brande (1788-1866) Henry William Pickersgill (1782-1875)

The picture has something of this: portrait, people, wear, man, woman, jacket, outerwear, music, retro, side view, vintage, indoors, jewelry, lid, royalty.
Perhaps it’s a painting of a man in a black suit and white shirt holding a piece of paper in his right hand and a book in his left hand.