Susannah and her children sailed to America in 1854 on the ship Marshfield, arriving in New Orleans on 28 May 1854. The ship manifest shows her given name as "Susan."
Evidence from emigration, genealogical, census and church financial records proves that the Gadbury family traveled to Utah in 1854 or 1855. Further research is needed to confirm the year they came to Utah and the name of the company they traveled with.
The 1860 California Census shows her name as "Susan Amer."
The inscription on her gravestone shows her name as "Susannah Amer," and it confirms her death date. She was 75 years, 7 months, and 21 days old at the time of her death.