Hi, I am searching for any information regarding my father's birth father with this last name. He had 4 children with Lydia Rock from the 1940's to the time my father was born in 1952. Two boys and two girls, all were separated after the death of their mother. There is another family of half siblings with the last name Jochem in this area of Germany. I was just recently in Germany in July, but due to time restraints I was unable to find any other information. If you have any other information please contact me. Thank you