Do you know date your Heinrich married your aunt Beatrice? I don't have a date for his marriage to Hilda, but I agree this is too much of a coincidence????? Could he have been married to both at one time?
I have a birth certificate for my father - it's in German, so I can't read a lot of it, but I can read father Heinrich and mother Katherine and Hirschland and March 14, 1900 (I always though it was March 13, but oh well).
My email is firstname.lastname@example.org
if you want to get in touch. Because I am so new to Ancestry.com I may have gotten way off line!