What was Genendal’s real name?

In the naturalisation papers of Morris Philip Greengross, he states that his mother’s name was Genendal Gringross nee Fisher.

Page 8

Morris Philip Greengross - Naturalisation Papers - Page 8

However, in the naturalisation papers of Cissie Greengross she states that her mother’s name was Scheindla also known as Jennie Greengrass nee Seltz.

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Cissie Greengross - Naturalisation Papers - Page 3

In the 1911 census her given name is Janie Greengross.

Finer/Greengross household - 2 April 1911 - 129 Old Mantague Street, Mile End

So what was her real name?