This is an update to my last response. I have come up with one interesting snippet. There is an 1865 New York Statecensus for Newfield and in it says that Sarah Gray Grover was born in Westchester. I did a little research and found some families there and on my next trip down (Dau. lives in Brooklyn) I will look into some books at the public library (which now has the collection for the old New York Bibliography Society. I think I found some Gray stuff on the Westchester genweb site.
Also saw a newspaper brevity where Anson Grover paid a visit to Drury Gray at Sumerton Corners in Enfield (very close to Trumbull's corners.
Have looked for Gray genealogies that would help, but nothing yet.