I'm related to Elizabeth Blackman, but I am very interested in her though. At this point, I'm not entirely sure if Elizabeth was a widow of an unknown Mr. Blackman, or if she was a single mother, and Blackman was her surname.
Single mother seems more likely based on available evidence.
If she were a widow, instead of a single mother, I have no leads on who her husband might have been, nor do I know who her parents were. No other Blackman's were listed nearby. Analysis of her neighbors show that she was probably residing in Bethea Township. James Blackman was just two houses away. Might be her brother.