note from moderator: 
James Fassett may have owned land next to John Bunting at Sandy Branch,
but the 1788 deed at bottom from Dennis to Fassett was not that land. 
The Assawoman creek mentioned in the deed is near the Head of the Sound, nr Williamsville,said creek being today Dirickson's Creek.****
[Google maps for Sussex DE brings up Dirickson's Creek]
Dr. John Lyon stated this Assawoman Creek/Dirickson's connection in an LDR post, further stating this to be the location of a place called Indian Town.

The below deed from Coffin to Gray cites the location of Assawoman Creek:****
Land Records of Sussex County, Delaware, 1769-1782 Deed Books L No. 11 & M no.12, p161 f242

James Gray, now of Sussex Co., from William Coffin son of John Coffin of Worcester Co., dec'd. 
Deed of sale.  28 NOV 1778
Whereas said John Coffin in his lifetime for 240 pounds agreed to convey 45 A.
said William Coffin in consideration of his father's obligation

**** conveys a parcel on Assawoman Creek at the head of of Assawoman Bay.
     Beginning at a marked oak on a small stream that runs into Indian
     Assawoman Creek on the south side of the said creek ****

it being the first bounder of a tract called Scotchish Plott which was formerly in possession of Hugh Tingle.
wits: Dennis Comfort Walker, Adah Boyd (her mark), William Riley Evans
Within deed ackn. 3 FEB 1779
_______


Below deed from Beth Wolpert is not nr Sandy branch but I left it on the site because it documents the confiscation of "Tory lands" by DE: 

Land Records of Sussex County Delaware 1782-1789 p. 92 #503
Deed Book N # 13
by Elaine Hastings Mason and F Edward Wright

23 APR 1788   Deed.  JAMES FASSETT from ROBERT DENNIS, Wor Co MD 

Robert Dennis in 1773 possessed 266 acres, pt/o a tr called FRIENDS 
DESIRE, formerly in Wor Co now Suss, adj Assawoman Creek, 
which Robert Dennis in 1773 sold to JOSHUA HILL 
(and gave bond to said Hill for the conveyance thereof, but said Hill never paid the whole of the purchase money and)

"
said Hill in the late war went off to the English
and his property was confiscated by Act of Assembly of Delaware
and the aforementioned 266 acres with some other lands adj were sold
under the confiscation laws 
to said Fassitt in 1780
and conveyed by Levin Derrickson so empowered by said act.
"

Now Robert Dennis in consideration of further sum of 200 pounds
grants to said Fassett his right to the land.
Wits: Elijah Fassitt, John Postles. Ack. 7 May 1788