Maria Taylor

She came from England on the ship Germanicus in 1854 with her mother, Ann, and her sister, Martha.

Her birth and death dates are confirmed by the inscription on her gravestone in Thatcher, Arizona.  However, her name appears on the 1910 Idaho census with her husband, his 2nd plural wife, and the correct children.  

Her surname is "McRae" on Find A Grave website.