Hans Alexander Katzenstein lived in Berlin, Germany prior to emigrating to Holland in the 1930s. He died in Buchenwald Concentration Camp on 01.02.1945. (Bundesarchiv Gedenkbuch)
I would greatly appreciate any information about his family, parents, etc.
A housemate is alive and living in the UK. he doesn't remember Hans well, but might have information you would be interested in. He gave me permission to give his email. tekla47@hotmail.com