Painting somewhere down near the water. American. Mary Blood Mellen, painter (1819-1886). Studying under artist Fitz Henry Lane, she is associated with the Hudson River School.

"Field Beach, Stage Fort Park." ca. 1850. Oil on canvas mounted over board.
“Field Beach, Stage Fort Park.” ca. 1850. Oil on canvas mounted over board. Image © Cape Ann Museum. Fair use license. via https://www.capeannmuseum.org/collections/objects/field-beach-stage-fort-park/
moonlight-landscape
“Moonlight Landscape.” 19th c. In the public domain due to age. via https://americangallery.wordpress.com/2012/07/15/mary-blood-mellen-1817-1882/
"Boat in Gloucester Harbor." 19th c. Oil on canvas.
“Boat in Gloucester Harbor.” 19th c. Oil on canvas. Image © 1999 – 2020 SKINNER, INC. Fair use license. via https://www.skinnerinc.com/auctions/2432/lots/71