The Birch family arrived in New York on 24 July 1866 via the ship St. Mark. Only Ann's name appears on the records for Scott's overland company as head of household. However, the record does show that she purchased 5 1/2 adult food rations for that portion of the journey, which indicates that the family that was on her during the ship voyage continued on with her in the overland company. On one copy of the company roster, Sarah Boot's name is written next to Ann's. That would account for the extra food ration that Ann purchased.
In the 1870 Utah census Ann and her family are listed under the surname "Poulton" because she had married Thomas Poulton.