I have noticed that this message was posted quite a few years ago, but I thought that I would try to see if you are still actively using ancestry.com. The line of Bains that you have mentioned is also my direct line, and I would like to know if you were able to find out any more information on William Bain and Isabella McKenzie Bain.
I would like to know the dates of birth and death of William Bain as well as where he is buried. (I was able to find a picture of Isabella's gravesite at Killearnan Church in Scotland.) I would also be interested in finding out the names and dates of earlier ancestors of the Bain line. Thanks for any information that you might be able to give me.