When Martha Thorp was born on 10 December 1858, her father, John Thorp, was 31 and her mother, Agnes, was 31. She married Frederick Marshall on 14 June 1880, in Saint George the Martyr Holborn, Middlesex, England, United Kingdom. They were the parents of at least 6 sons and 3 daughters. She lived in Catford, Lewisham, London, England, United Kingdom in 1911 and Beckenham, Kent, England, United Kingdom in 1939. She died on 23 August 1943, at the age of 84.