This seems pretty basic. Ordering the social security application information is expensive but definitely a great source. I remember when they were free! I also think you should follow the children. The doctor should be fairly easy and you could contact living people and ask them for yourself. You can also track them both through Ellis Island using Stephen Morse's website. It's very possible given large families in those days that there was 20 years between two siblings. I've just discovered that my grandmother had a much older brother who left home when she was very young. Jackye Sullins San Diego > I need help-advice and a look up.In gfathers obit it mentioned that he had > a > sister,Ida Weintraub Hertzberg, but I cannot find her. > Can one see where they lived other then Chicago