Her name is listed as "Mary" on the 1870 census.
Although not directly listed in the memorandum book, Joseph (Mary's father) purchased enough food rations for seven people. According to Mormon Migration, the Tuckfield's traveled from Liverpool to New York aboard the Colorado, arriving 28 July 1868.
Birth and death dates listed were found in a personal, online family history record (such as Family Tree, Ancestry, or My Heritage), without any accompanying documentation. Further research is needed to verify its accuracy.