I have discovered that I have two great grandfathers named REICH, one on my father's side and one on my mother's. Let's hope they were different people.
Both were in Burma (now Myanmar) in the late 19th century.
I've managed to extract this information from my 93 year old aunt.
It is difficult to extract more.
If there are any REICH hunters out there scouring south east asia I would be interested to hear from you.