William's obituary states that he arrived in Utah on 17 September 1850. His biographical sketch indicates that he traveled with the Evans company.
William later participated as one of the rescuers that were sent out in the winter of 1856 to assist the members of the Church stranded in Wyoming.
Sources disagree on the birth date. Some indicate it was February 1st, others February 14th. Many give only month and year. It is likely he did not know his exact birth date.