Hi! I was excited when I saw that you had a George DeForest, but unfortunately, mine was born sometime in the 1790s. I think my George was the brother of my great grandmother Maria DeForest, born 1794 in Woodbourne, N.Y., and died 1868 in Pleasantville, N.Y. He was married to Charlotte Vanderbilt, sister of Commodore Vanderbilt, but they were divorced. That's all I know about George. He very well could be an ancestor of your George.
There are many DeForests who were Rev. War veterans -- they are listed in the New York Genealogical & Biographical Index. There are slso a number of DeForests buried in the Greenwood Cemetery in Brooklyn, N.Y.
I hope we both have luck in finding our "George DeForests"