… his papers was nominally left to Robert Berry, Mary's father, but it was the daughter who posthumously edited the five-volume Works of Horatio Walpole, Earl of Orford (1798), albeit not under her own name. 4 She later also edited Madame du … works. 8 The main source about her sociable life at home and abroad, her encounters, and her journeys is the three-volume Extracts from the Journals and Correspondence (1865), a posthumous edition for which she had given directions and … in society. Part of their interaction is documented through letters that Walpole sent them, which are contained in two volumes of the monumental Yale edition of Walpole's correspondence. 10 Their friendship took the form of a gallant game: …