Portrait of Count Giovanni Battista Sommariva Andrea Appiani (1754-1817)

The picture has something of this: people, portrait, man, leader, writer, poet, wear, jacket, politician, scientist, outerwear, music, elderly, facial expression, profile, musician.
Perhaps it’s a close up of a painting of a man in a black suit with a white collar and a white ruff on his left side of his face.