Hi Karen, I just found this page and board and am intrigued. My maiden name is Kaatz, my fathers name is JB Kaatz. I have a picture of him at about 10 years old. On the back of the pic it says 'Uncle Christoph's son, 10' This never made since to me because his fathers name was not Christoph. Do you have any info of a son of Christoph's living with relations? My father is 63 yrs old. He is the youngest of 5 children. Any info you have found would be much appreciated.