William is seen in the 1850 Iowa Census Nathaniel MIner Bennett and Patience Miner Bennett. They are possibly his father and grandmother. First documentation to place him in Utah is a rebaptism in the MIllcreek Ward on 15 March 1857. Further research is needed to narrow the year of their travel and identify the name of the company they traveled with.
Birth date is confirmed by Millcreek Ward records.