I'm not sure why, but she went under various names. Her marriage to my GGrandfather was under the name of Nellie Keller, I have also seen Nellie Keeler, Mollie Keller and Margaritha Rueschen. The family name has been Ruhsen, Rushen & Reason. She is buried as Margaret Foster in Mt Greenwood Cemetery, Chicago, IL with Frank EM Foster. Frank EM Foster was an alias for Edwin Morgan. Edwin changed his name when he came to the USA.