Bridget was not one of George's children. Corber is also Corbee.Which was William's last name. Another site is the Langdon Family history.There you will find more on Deliverance. For some reason the MA legislature changed the name from Langton to Langdon.Again, you will find more sources there that you can use. By typing the name in the box at the top right corner of the family page you can find other sources.
Have you found out any more about President Fillmore connection?