• Evidence from genealogical records proves that the Grant family traveled to Utah in 1851. A child was born 11 May 1851 in Iowa. The first documentation to place them in Utah is the death of Joshua in Salt Lake City 21 Nov. 1851. 

Joshua Grant Freight Train (1851)

• Age at Departure: 24

Sources

• Find a Grave (Website)
• "Local and Other Matters.  Death of Mrs. Louisa M. Grant," Deseret News [Weekly], 20 December 1876, 744.
• Nauvoo Community Project