The captivating Lais ; The favourite of the fair [graphic].June 1, 1779.eng"Portraits of Robert Bertie, 4th Duke of Ancaster and Kesteven, at right, in profile to left, facing a lady, directed to right, in separate medallions, surmounted by ribbons; illustration to 'The Town and Country Magazine' (1779, p.233). 1779"--British Museum online catalogueTitle from item.