One of twins. Whereas records for her older siblings name them as "Froehlich alias Borinski" the only records I've found for Magdalene or her twin brother name them as "Borinsky" (sic).

Named as Magdalena in the record of her marriage to Nathan Stern cited by both JRI-Poland and Delowicz (page 83, Borinsky, Henriette Magdalene), although the JRI-Poland records a note "or Amalie?". She is named as Amalie in Delowicz (page 85: Bottenbreiter, Hirschel) as well as Julius Jacob Stern's death certificate and Nanny Stern's death certificate.

Named as Magdalene in daughter Johanna's death certificate.