Ruth Henshaw Bascom, also known as Aunt Ruth, (December 15, 1772-February 16, 1848) was an American folk artist who produced over 1,400 portraits.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Ruth_Henshaw_Bascom

Man with short Hair and white Stock, profile by Ruth Henshaw Bascom
ND / Graphite pencil and pastel on paper / 19″x14-1/4″ / Museum of Fine Arts, Boston, MA

Ruth Henshaw Bascom on Artnet: http://www.artnet.com/artists/ruth-henshaw-miles-bascom/

Further reading:
https://usfolkart.com/index.php/product/ruth-henshaw-bascom-1772-1848-classic-portrait-of-a-brown-haired-young-girl-probably-massachusetts-circa-1830/
https://web.colby.edu/thelantern/2016/11/01/artist-attributed/
https://poulwebb.blogspot.com/2016/12/american-folk-art-part-18.html (scroll down for Ruth Henshaw Bascom)