Ann Rea
She emigrated from England, along with William and their two children. William, Ann, and Sarah are located in the same household in Utah, according to 1860 census records.
Sarah and two children, Charles William and Rachel, are listed on the 1856 Enoch Train ship manifest. It is assumed that "Rachel" is Sarah Ann because Sarah Ann's name appears on the census with her family, and she is the same age as "Rache." Ann's husband's name does not appear in that record.