All the information about Mary and her descendents comes from
Mary's great-granddaughter, Becky Saunders. However, Mary's
daughter Frances Elizabeth was living with Honora and Tim McGrath
in the 1885 and 1900 censuses. Mary was with her
parents in the 1870 census and Becky Saunders notes that that was about
the only official written record of Mary that she had found.