My great-grandmother was Glen Helley's sister Fern. I don't recall ever hearing any stories about the Helleys ever changing their name from Olson to Helley, but they did alternate the spelling of Helley. Harry Helley would spell it with and without a 'y' at the end. His father was Hans Helle and he lived in Jackson County, Wi. Harry and his brother Ole both moved from Jackson County to Columbia County, they were married to Carrie and Julia Erickson, sisters. I have a couple of pictures of Augusta Olson, who was an aunt of Glenn and Fern's but I don't know much about her.