I've put a little information on there about the Hudgins history. (I've included some of the things about Mary Melissa that you sent me. I hope that's okay.)
Anyway, we've had a hard time finding information on the father/s of these three. It seems that their mother's maiden name may have been Hudgins (I've heard this, but don't have any proof.) The three children each got the surname Hudgins.
Margaret Delilah "Lila", their mother went on to marry a man named James Henry Holderfield. They had at least six more children.
So, which of William Robertson's children is your ancestor?