Hi, I am looking for information on a relative that lived at Erichstraße 4 in Wuppertal from 1956-1975. His name was Adolf Gerlach. The business he ran was called Camera Werk. He invented cameras and household appliances and gadgets. I am told he had twin daughters and possibly other children. His brother (Karl Ludwig Gerlach) was born in 1909 so he was probably born around that time and his children would have been born in the 1930's. I am thinking he was an older brother, so born before 1909.
Ansolutely anything anyone could tell me would be so greatly appreciated, thanks!