I'm afraid I don't have any good news.I checked "A Calendar of Delaware Wills, New Castle County, 1682-1800" and didn't find any mention of Charles.You might check the Delaware Archives web page http://www.archives.lib.de.us/http://www.archives.lib.de.us/ There is a searchable list of probate records for New Castle County.It doesn't mention a Charles, but you may find a name you recognize in the post 1800 records.
Here are the listings from ""1782 Tax Assessment and Census Lists":
Ester Kelly, Christiana Hundred, 1 male under 16, I female over 16
James Kelley, Pencader Hundred Samuel Kelley, Gt, George Hundred Samuel Kelly, Mill Creek Hundred William Kelly, Red Lion Hundred Samuel Kellys, Christiana Hundred
Interestingly, all are in New Castle County.Maybe that will at least narrow your focus.