• William's wife, Mary Ann and daughter Sarah Jane also came to Utah in 1847 but with the Jedediah M. Grant/Willard Snow Company.   William and Mary Ann were both rebaptized in Salt Lake City on 5 December 1847.

Levi W. Hancock/Jefferson Hunt/James Pace/Andrew Lytle Company (1847)

• Age at Departure: 26

Sources

• "Death of William Caster [Casper]," Deseret News , 18 July 1908, 1.
• Norma Baldwin Ricketts, The Mormon Battalion: U.S. Army of the West, 1846-1848 (Logan, Utah: Utah State University Press, 1996), 23.
• Salt Lake Stake, Record of members collection, 1836-1970.