I don't know how much I can help you but I did find the following information:
St. George Vital Records
1837 Nov 22 Mr. Silas Bunker of Gouldsboro and Miss Susan Wall of St. George. Joined in marriage by Charles Stearns, Esq.
I can't positively identify her parents from the Vital Records but I can give you a little information:
In my Family Tree I have a James Wall, b. 1765 in Boothbay, Lincoln County, Maine. James was the son of Patrick Wall (1746-1810) and Mary Linnekin (1747-1805). My Great Great Grandmother Martha Wall was a sister of this James Wall and she was born in 1775 and the family was in St. George, ME in 1775 and James would have been 10 years old. I have no proof but somewhere I found that James Wall married Mercy Sterling. This is the only early James Wall that I can locate. I only have one child listed and that would be a Mary Wall and she was born in 1805 in St. George. Sorry I couldn't be of more help but if you need additional informaiton, please contact me offline at email@example.com
. Joanne Clark Borden