John and his wife Jane came to Utah between 1852 and 1856. They lived in North Pigeon, Iowa from 1849 to 1852 so they likely crossed the plains in 1852. But the first documentation to place them in Utah is the 1856 Utah Territorial census (taken early in the year). Further research is needed to narrow the year of their travel.
Media

John Hunt (1785 - 1857) Profile