OK, I see. Isiah "could" be a nephew of this earliest Edward. It would seem that the time frame would fit if Edward had brothers. I am just south of St George's just east of Odessa and am an attendee of the Odessa Friends Preparative Meeting. I wonder if there are Blakes in the Odessa meetinghouse cemetary. I have scanned the stones but, don't recall any Blakes. If your Edward were south of the present C&D Canal(formerly St George's Creek) he would have been closer to Odessa (known at that time as Cantwell's Bridge) than Wilmington. Is your interest strictly in Edward's son (Edward) or Blake family in general ?