Thanks for the information. Very useful background. I had heard of Wilhelmina Anheuser but never been able to make a connection. It's surprising how contradictory some of the information is. I had Andrew Jackson Niblett as born around 1830 in Alabama but the census record changes that. I will amend my records.
I have published all my data on the Niblett family on Ray Niblett's web site at www.telbin.dreamstation.com if you want to look at it.