• The Sprague family traveled to the Salt Lake Valley with the Brigham Young Company in 1848.  The family consisted of Samuel Lindsey and Mary Woodward and their son, Samuel Lindsey, Jr.  Samuel Sr. served as the physician for the camp. 

  On the 1850 Utah census her surname is "Shraque." In some documents her maiden name is spelled "Woodard,"

Brigham Young Company (1848)

• Age at Departure: 45

Sources

• 1850 Utah Census.
• "Death of a Pioneer," Salt Lake Herald-Republican, 16 September 1898, 5. Mrs. Mary Sprague Passed Away Last Evening.
• "First 100, report, 1848 June" in Camp of Israel schedules and reports 1845-1849, Brigham Young's 1848 emigration division.
• "Pioneer Woman Dead. Mrs. Mary Warner Sprague Passes Away," The Daily Tribune , 16 Sep. 1898, 5.