Hello Jane and Noel,
I too am descended from Gerald De Windsor. My 2nd greatgrandmother was Frances Elizabeth Carew, daughter of Robert Shapland Carew and Euphemia Gordon.
I also would be very interested in any evidence of a line of descent from David.
The leading researchers on this line, who have worked on it for many, many years, have never attributed, nor established any descendants for David.
Debby