Anna`s mother, Emilie Blank, was first married to Heinrich Ristow. We see this on the marriage of brother Paul in 1906. Paul was born around 1882, and Anna in 1879.

The marriage of Anna and William Laatsch incorrectly gives Anna's father a Ernst Post. As does the birth of their first child, Lillian Anna. In fact, Ernst Post and Emilie Blank did not marry until 1889, when, I assume, Anna took the Post name.

The error is corrected on the birth of Anna's second child, Florence. Florence then plays that forward as the informant on her mother's death.