Evidence from emigration and genealogical records proves the Thompson family traveled to Utah in 1861. The Mormon Immigration Index lists this family under the surname of "Nielsen" in the on the 1861 Monarch of the Sea ship register.
She is born Maren Pedersen daughter of Peder Nielsen and Maren Mortensen in Lendum Parish.
The family came on the ship Monarch of the Sea in 1861. The family consisted of: Peter, father, mother Maren, and children: Cecilia M., Maren, Mouritz Chr., and Niels Andreas.