I discovered this page today..., My mother family name was mendelson, the spelling is not important because in Mexico changed. The name of the mother of my grandmother was Genia Mendelson, My grandmother name was Rachel Mendelson and she married Nathan Fastag in Poland. She had 3 sisters and one brother, one sister died (I don´t know her name), the second one was Francis Mendelson and she lived in the bronx in USA, Sara that came with her to Mexico and died here and the brother was Nietech Lessel (from de second marriage).
I don´t know what happen to that family in the US, and I´m looking for relatives of my grandmother.I hope to find someone of that part of the family tree. I have photograph of Genia Mendelson in Poland, and the history of how they came to Mexico.