I am Hilda's daughter, and I remember the name Egon Brenner from my mother. They both left Vienna in 1938, but I don't know exactly how we're related.
The only clue I have is the U.S. Immigration card for Egon (Sep 11, 1938 ... just a few weeks before my mother arrived in NY) cites the name and address of their cousin: M. Shaker, 2050 N.18th St, Brooklyn, NY.
Egon Brenner
I assume this "cousin" my mother's first cousin once removed Minnie Fuchs Shakter's husband Max Shakter. So I know which side of my family Egon is related to, but I don't know much more than that.
~~ Barbara Newdorf Feldman