Robert Mallinson
Aaron Hardy's journal indicates that Robert came to the U.S. in 1861 and worked on the Overland Telegraph lines. More research is needed to confirm that information.
He married Caroline Prestwich in 1862 and they settled in Sanpete County, Utah.
More research is needed to verify his birth and death dates. He was christened on 1 January 1843 which indicates that he was born sometime in 1842. His Family Search page suggests that he died on 10 September 1894, but there aren't any associated sources to confirm that date.