Northesk, William Carnegie, Earl of, 1758-1831

Letters from various correspondents addressed to Dennistoun or to his wife, Isabella. Many are of a social nature. Letters from William Carnegie Northesk and William Stirling Maxwell concern art collecting.

Series I, Letterbook of Lady Mary Hamilton, contains correspondence by and to the author Lady Mary Hamilton, principally with her daughter Betsey Walker Thiébault and her son-in-law Paul Thiébault; her siblings, including Anne Leslie Carnegie, Countess of Northesk, and Alexander Leslie; and with George Robinson Hamilton and Sir Herbert Croft. Series II, Family Papers, contains a detailed biographical memoir of Lady Mary by her grandson, Baron Adolphe Thiébault.