When Lucinda Willis was born on 22 July 1825, in Rochester, Kent, England, United Kingdom, her father, George Willis, was 35 and her mother, Louisa, was 33. She married Edward Cox on 22 February 1846, in St Mary's, Ealing, London, England, United Kingdom. They were the parents of at least 6 sons and 4 daughters. She immigrated to Utah, United States in 1860 and lived in Lambeth, Surrey, England, United Kingdom for about 10 years. She died on 7 October 1866, in Salt Lake, Utah, United States, at the age of 41, and was buried in Salt Lake City Cemetery, Salt Lake City, Salt Lake, Utah, United States.