Jonathan and Shurburn Fernal are in Lincoln, Penobscot ME in 1830. According to Jonni Sues website Jonathan died in 1839 in Lincoln. Unfortunatly only Henry Helson is listed in her database as a child for Jonathan, but Sherburn must be a brother to Henry. Jonni also has a last name of Shurburn connected to this family. And a Henry Sherburn is contemporary to Renald Fernald in Portsmouth NH.
I'll try to put this all together when I have time.