Emil Madarász (Vogel) - Moric Schonbrun and his Mother Eszrti Schonbrun

I would love to know how you found out that Moric 's mothers name was eszti schonbrun. But since we don't know where eszti fits in, we still don't know how moric and all his decendents (I have a full list of them), fits in either.
I also have some files I would like to pass on to you, Benjamin. How do I do that?

There is an Esztii in Hermans (from david and chaje) Children, But she was much later than Moric so she clearly could not be his mother.