My mother's name was Erma Berdeen Langton. Her maiden name was Lister. She was born 02-02-1915, perhaps in Lincoln, NE. She died 12-09-1996 in Lincoln, NE. Her parents were Charles Lister and (I believe) Elizabeth Kerns, of Lincoln, NE. I do not have credible info beyond that. I am seeking information on my maternal grandparents, Charles Lister and Elizabeth Kerns Lister, and their forebears. I am especially interested in establishing their ethnic heritage.