From Mullin's book on Limavady & the Roe Valley
MISCELLANEOUS - page 120
BENBOW:
Died 1855 at Artikelly [Aghanloo], aged 92, William WATSON descendant of Thomas Benbow, early settler at Limavady, who was a near relative of Admiral Benbow. A Benbow FERGUSON on Kavanagh's Map 1835 [Derry Sentinel 2 Feb 1855]
In the Limavady Corporation records a Robert, Richard & Thomas Benbow are mentioned in the early records late 17th early 18th centuries: The male Benbow line died out but was carried in the Ferguson and Watson lines:
As the name Benbow was carried down in the family perhaps Winderfor was a name in the Benbow family?
You should also research the Benbow & Watson collatoral lines as they may throw up some additional Ferguson connections.
I may have additional notes on the Benbow family somewhere in my files if you are interested.