I had written:
"The earliest James SMITH has estimated date of 1742."
This James SMITH's entry reads:
BG C SMITH James E 1742
The sponsor column (between "James" and "E") is empty.
B means Burgess Roll;
G means Guild Brother;
C means Cordiner;
E means Estimated date (indicated from references).
So, not much information. Sorry there isn't more.