Rising 4,541 feet above sea level in southwestern Salt Lake County, Riverton, Utah borders the Jordan River and enjoys enviable views of the Wasatch and Oquirrh mountains. It’s a peaceful, prosperous city whose origins were anything but.Riverton was originally called Gardnersville to honor one of its first residents, a Scotsman named Archibald Gardner who led a colorful life. His father, Robert, was...