The periodical Delaware Historical and Genealogical Recall Vol 1, issue 2, May 1933, included an item of possible interest.
On 3 December 1786, James Faris and Jane his wife of York County, South Carolina, to "our brother Richard Adair", power of attorney to receive one-seventh part of a tract of land at New Castle County, Delaware, formerly belonging to William Adair. Witnessed by William Fearis and Alexander Fearis.
The reference they gave was D-12-77, but I did not think to find out what that meant. Probably the deed book. The periodical was devoted to finding evidence in any form of Delaware marriages.
"Brother" meant both literally brother as well as brother-in-law at the time, so presumably James Faris had married Jane Adair who was due one of seven parts of William Adair's estate.
Also, while copying a record, I noted that William Adair of Pencader Hundred died and his next of kin Samuel Adair was granted letters of administration on 3 December 1779. That was Will Book L-page 181.
I have no connection whatsoever and no further information. I research in Philadelphia but I also research Lancaster Co, SC, and whenever I see a SC connection to the North, I jot it down. This may not help, but I hate to waste a fact, and when I go again to the library I could get fuller references.
For the record, a "Hundred" was a minor civil division resembling a Town or Township or Parish, etc. It has lost its political meaning in Delaware though retained for reference. In Maryland also the "Hundred" was once used but now seen only in old records. Pencader Hundred is in New Castle Co, DE.