The Wells family was in Iowa at the time of the 1850 federal census (enumerated 12 September) and Otha (head of household) is documented in the Valley by the 1852 Bishop's report, so his family must have traveled between 1851 and 1852. Further research is needed to narrow the year of travel and identify the name of the company they traveled with.
If the birth of his daughter, Mary Ellen, on 18 March 1852 in Salt Lake City, or the death of his son, Wilbert, on 13 October 1851 in Utah could be verified, the family could be moved to the 1851 emigration year.
Birth and death dates listed were found in a personal, online family history record (such as Family Tree, Ancestry, or My Heritage), without any accompanying documentation. Further research is needed to verify its accuracy.