The originof my Feinschreiber family is from Lida, Pinsk today Belarus.
It was Poland. It was a Rabbanical family that immigrated to Israel in 1920
You can read with the Google translation in this link:
We live In Israel and be pleased to share with you my info about this family.
May be you can give Robert Feinschreiber a helping hand to find his roots and if he is related to your Feinschreiber's?
I suggest you two start collaborating and exchange details using personal messages.