Gertrude Mary Fox (1854–1879)
Gertrude Mary Bosanquet (1879–1900)
Daughter of Ellen Sophia and William Darwin Fox. Married Frederick Charles Tindal Bosanquet in 1879.
BMD (Marriage index)
Darwin pedigree
England & Wales, national probate calendar (index of wills and administrations), 1858–1966 (Ancestry.com, accessed 23 March 2017)