Hi Jim-
I have Susanna (Howard) Newton's parents as William Howard (d. 1753) and Sarah Smith of St Mary's Co, MD. I also descend from Margaret Howard who married John Shanks, and they were the paternal grandparents of Susanna Shanks who married Ignatius Newton.
I have William and Margaret Howard as children of William Howard (d. 1730) and his wife Mary of St Mary's Co, MD. If you fill in more detail on these lines I would greatly appreciate it. Thanks!
--Todd