Norwegian ancestor from Lawler, Iowa

Hello. I know this is a shot in the dark, but I was wondering if anybody could dig up info on a certain Annie Olsen (1869-1956), supposedly of Norwegian descent, who was from Lawler, Iowa. I know she married a John Rudenberg (born June 16, 1856) who was originally from Smaland Sweden, and they had a son named Hilmer Rudenberg, who was my great-grandfather. If anybody could find anything on Annie, please let me know. I'm kind of grasping at straws here... Thanks, --Calli Rudenberg