Good Afternoon. I do not have much information about Alexander Abbott and Nancy Doty but I did find the following information concerning their son John Abbott and Margaret Barkley:
John and Margaret were married June 1, 1854. Margaret's former name was Margaret Barkley, she was born September 5, 1837, and is a daughter of John and Sarah (Anderson) Barkley, who came to Illinois from their old home near Dayton, Ohio. There were seven children (no dates):Samuel, William, Sarah, Julia, Laura, Albert, and May.
My grandfather was Herman Abbott (Alexander 5, Armstrong 4, Hiram 3, Richard 2, Alexander 1). I do have more information that I would be happy to share.