Wow! William Stewart is my great grandpa too! I was named after their daughter Mary Jane. She was my grandmother. She married McKinley Brewer, and my dad was their son. My sister and I have also had a heck of a time finding much on them. There are soooooo many William Stewarts! In part of the family they called Mahala Haley. I didn't even know he had a second wife. I'm going to get this info to my sister who is really digging in to our mom and dad's ancestery. Maybe you can help each other!