• William initially traveled to the Salt Lake Valley in the Brigham Young Company in 1848 as indicated by the 1850 Utah Census and New FamilySearch/Family Tree. 

  At the end of a mission, he traveled home with the Joseph S. Rawlins Company in 1868 as indicated in the Deseret Evening News Article on 20 August 1868.

Brigham Young Company (1848)

• Age at Departure: 5

Joseph S. Rawlins Company (1868)

• Age at Departure: 25
• Returning Missionary

Sources

• 1850 Utah Census.
• "Captain Joseph S. Rawlins, list of passengers, 1868." In Perpetual Emigrating Fund Company church trains accounts 1861-1868, Captains' accounts 1862-1868. (CR 376 8, Box 2, Folder 7)
• Early Missionary Database
• "Elders Arrived," Deseret Evening News, 20 Aug. 1868, 3.
• Find a Grave (Website)
• "First 100, report, 1848 June" in Camp of Israel schedules and reports 1845-1849, Brigham Young's 1848 emigration division.
• Missionary Department Missionary Registers, 1860-1959, Volume 1.
• Saints By Sea: Latter-day Saint Immigration to America