Marie-Jaqueline Hope-Nicholson was born in 1922 to Jaqueline and Hedley Hope-Nicholson. She was a well-respected magazine editor and, along with her siblings, made More House a hub of London social life during the war years. In 1945, she married Maurice Lancaster who was a war correspondent and manager of the March of Time newsreels (later a managter at Harpers Bazaar). M-J (as she liked to be called in lieu of her very long formal name) also saw herself as the More House archivist, particularly after the death of her brother in 1990, and was instrumental in the (failed) efforts to save More House and keep it intact as a research center and museum. She edited her grandparents' correspondence as Letters of the Engagement and also reissued her mother's Life Amongst the Troubridges, in addition to working on several other editing projects of material from the More House Archive (particularly the diaries of Charlotte Allen), which were not published. M-J Lancaster died in 2010.