Laura... I believe that Isabelle (or Isabella) was the second child of Robert McGough, Sr., who came to the colonies in 1771 from Newry, County Down, Ireland.I am a 9th generation descendant from this family, descended from Robert's third child, Robert McGough, Jr. This family came to the colonies with a group of relatives named Carson and McDowell.There are several instances of McGoughs and Carsons marrying. Carolyn Rowe has written a book about the McGough family called "A Glimpse of the Past".She would probably be interested in any descendant information you might have.You can email her at email@example.com. If you have any questions, let me know.