Linda,
Stephen's real name was Stanislaus. But besides that, I think your Ferdinanda Kreft may be the sister of my maternal great great grandfather, John. I have found four siblings so far and have proven it. August, Mary, Juliana, and Josephine. All from Germany, lived in Detroit at one time or another. DNA found August and Mary. After that, it was easy. Please contact me.
Jomilu