Wow, amazing what you have found. Thank you very much. I had no idea when they married and what the maiden name of Cecil was.
And I don't mind you helping me again at all ;). I need lots of help with my project. I am researching the emigrants and their families from my place here in Germany. I don't go further than to their grandchildren, though.
The grandfather of George Frederick Robertson was born here in Baden, Germany.
So in case the owner of this familytree that you mentioned, will read this and follows the line of George Robertson, I can give them information about their german ancestors.