James B. Hearn
At the site, Jay documents information about Samuel Batson Hearne, born 28 Jan 1841, the son of Kendal Batson and Elizabeth (Hearn) Hearn of Littel Creek Hundred, Sussex County, Deleware. The place and timing means it is definately a descendant of William Hearne, the merchant. However, I can't quite tie them into the lines that are in Hearne History. I sent a letter to Jay for more information.
The biggest treat on the site is scanned images of the Day Book (or Ledger) of William Hearne the merchant. One of which I've linked in on the left. You'll have to visit the site to see the others.
I'll post more when I hear from Jay.