Ah...Nellie Oleson.  Readers and viewers alike recognize Nellie Oleson for the bully she was. So who was this Nellie that Laura Ingalls Wilder wrote about in the Little House books?  Prior to my research for  The Laura Ingalls Wilder Companion: A Chapter-by-Chapter Guide , I was aware that Nellie Oleson was not  exactly  a real person. I enjoyed learning even more about her character during my resea…