Her name appears on the ship manifest of the 1862 John J. Boyd as "Mary Kay," and she is listed as a "spinster." No family members accompanied her to America.
Mary Ann's obituary states that she came to Utah in 1862 with the James S. Brown pioneer company, but her name does not appear on the company list of passengers. A secondary source states that she came to Utah in 1862 with the Homer Duncan pioneer company, and her name is listed in the "Report of Immigration" as "Mary Kay." George and Elizabeth Kirkham are listed in this company also, and their names are also on the 1862 John J. Boyd ship manifest, so we feel that Mary Ann was with them in the 1862 Homer Duncan company.