Susanna Maria Appleby (born Gilpin; 1689–1769) was a British antiquarian who is principally known for excavating a Roman bath house north east of Camboglanna, Castlesteads Roman Fort, near Hadrian's Wall in 1741.
Joseph Dacre Appleby owned the land on which Camboglanna was situated, and employed men to dig at the site for stone.
[1] In William Hutchinson's 1794 volume on the history of the county of Cumberland, he publishes a letter written by the antiquarian Roger Gale with Appleby's description of the site.
[4] In his letters to The Gentleman's Magazine, Smith described how Appleby had found a clay flooring with pedestals, and commented that:Mrs Appleby, who deserves to be gratefully remember'd by all Lovers of Antiquity, took great Pains to preserve what she cou'd of those valuable Remains of the Antients.
[4]Appleby's early work and observations at the site of Camboglanna in the 1740s are significant due to the later destruction of the fort during the construction of Castlesteads house and gardens in 1791.