Thanks to research by Elodee and Jean-Paul, it seems clear that Marguerite Philippine Clara Olm is Augustina Olm. Here is an Jean-Paul’s explanation of the information in the birth certificate:
“For now, I’m sorry to tell you that we have to correct Gussie’s birth date. Elodee, in your second mail, you had written about several documents stating 3 different dates for Augustine’s birth. Today, I found the solution for this mistery !
In the ten-years tables, I found her on February 28, 1882. But the certificate that you had sent me was dated 1st of February, and the child was born ‘yesterday’, thus on 31st of January. In order to check that incoherence, I then searched for the certificate on the microfilm, but couldn’t find it around February 1 (those certificates were written into a book, thus they are ordered invariably by date). Searching further, I found Augustine’s certificate (Nr 10) between one from Feb 22 (Nr 9) and the next one from March 24 (Nr 11). Thus, the certificate is from 1st of March, Gussie is born ‘yesterday’ (Tuesday, Feb 28, 1882), and the officer simply had made a mistake by writing down the wrong month name. The person who drew the ten-years tables had noticed this and wrote the correct date into the table. But as the certificate is an official document, he couldn’t simply correct the date in it !”
Even though the birth certificate shows the given names Marguerite Philippine Clara Olm, for whatever reason we know her as Augustina or Gussie, the names she used throughout her life.
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