Portrait of a Boy Per Krafft the Elder (1724-1793)

The picture has something of this: people, portrait, wear, facial expression, woman, outerwear, man, jacket, girl, music, pensive, knitwear, indoors, sit, writer, musician, sweater, child.
Perhaps it’s a painting of a young boy sitting at a table with a book in front of him and looking at the camera with a serious look on his face.