Her marriage certificates both say she was born in Beuthen on 09.12.1888, whereas the two records of her deportation (which probably share a common source) and a testimonial give Namslau on 09.12.1889. The fact that the latter sources give Erna's maiden name as Tworoger and married name as Daumann (and the testimonial names her husband as Rudolf, a plausible vernacular cognate for the Hebrew Rubin, and her parents as Isidor and Friederike, the same names as given in her marriage certificates) suggest that they refer to the same person as the marriage certificates.