Frances Crofts Cornford (1886-1960), poet, was a daughter of Sir George Darwin and sister of Gwen Raverat; she married Francis Cornford in 1908. Sir Edward Howard Marsh (1872-1953), patron of the arts and for many years private secretary to Sir Winston Churchill, was a close friend of Rupert Brooke, and wrote the Memoir introducing Brooke's Collected Poems in 1918. Frances Cornford's letters provided him with much information about Brooke and his circle of friends.
From the guide to the Frances Cornford: Letters to Sir Edward Marsh, 1915-1951, (Cambridge University Library, Department of Manuscripts and University Archives)