I kind of hate to do this to you, but just the other day, when I was doing my on-line research, I ran into someone who relayed information about a slave owner who had a boy by one of his slaves. The child was given the Treadwell name and raised as a half brother to two other boys of the slave owner. Do you have a first name? I will try and find where I saw the information and get back to you when/if I find it. I have no idea if this is your line, but it's worth a try.