Having recently updated and added some additional information to the Aberdeen Cemetery page, I had a picture of the headstone of one of the "unknown" Jewish graves. The inscription on the stone was only in Hebrew. I spoke to a Jewish colleague of mine who, in turn, mailed the image to his Rabbi for possible identification.
The Rabbi was unsure of the husband's name in the text but this is the translation of the inscription:
Here lies concealed the modest woman
Ettle bat R’ Shraga the wife of
Adil Rein (?) 19th Tammuz 5685
Adil Rein (?) 19th Tammuz 5685
Further simplified, the details tell of the grave of Ethel, the daughter of the worthy Mr Shraga, and the wife of Mr Adil Rein (suname not confirmed). She died on 11 July 1925.