Janet "Jessy" Harden, n. Allan (25 February 1776 to c.1837) was a Scottish diarist who wrote 32 small volumes, considered exclusive documentations of the Edinburgh New Town society.
Her writing described the daily life of her family's affairs to update her sister, Agnes Ranken, who was living in India with her husband.
Her father, Robert Allan, was a banker, and the owner of the newspaper Caledonian Mercury.
[3] The British Museum has an 1806 drawing by John Harden described as "Portrait group of five figures, including John Constable making a drawing of Jessy Harden; five figures seated around table at Brathay Hall".
[4] Harden diaries and letters are held in the Archives and Manuscripts Collections of the National Library of Scotland.