Your Greenberry Griffin might be descended from Samuel Griffin mentioned below. The "Greenberry" name is distinctive. The dates are off for him to be the one mentioned below - but perhaps you have a Greenberry "JR"
Genealogies of Virginia Families from the William and Mary College Quarterly. Vol. III Heale-Muscoe
LEE.--I do not lay claim to talent as a researcher, but in my search for data on the parentage of Colonel (Thomas) Greenberry Lee of Virginia and Georgia, T have uncovered a bit of family history which it might be well to record. During the years, I acquired considerable data about my ancestor Colonel Grecnberry Lee, but for sometime could not locate his father. I knew that Greenberry Lee was a Colonel of Richmond County (Georgia) Militia during the Revolution,was a member of the Georgia Legislature, a Justice, a Road Commissioner, and died before he was thirty-six years of age. He was born in 1750, and married Elizabeth Few (Deed book "B" p. 458, Warren Co., Ga., records; Deed book "F" p. 21-22 Feb. 25, 1787, Richmond Co., Ga.) who before moving to Wrightsboro, Georgia, lived in Alamance, N. C. Her family was prominent. She had four distinguished brothers, one of whom, Colonel Wm. Few, Jr., was the first U.S. Senator from Georgia, a Signer of the Constitution from Georgia, and at one time Mayor of New York City. i have the old gun used by Colonel Greenberry Lee in the American Revolution, and have heard my father say that as a boy, Greenberry (not Granbery) Lee lived near Danville, Virginia; and that while not of the Robert E. Lee line, he did belong to a branch of the Virginia Lee family. I have letters proving this statement. So with this information I set out to find his parents. I decided to locate if possible some Lee who had married into a family where the name Greenberry occurred, feeling that the name Greenberry was such an unusual one that its occurrence would be evidence of kinship. My efforts were soon rewarded for I found in Mr. Clarence Griffin's book (Va. State Library) a Greenberry Griffin whose father lived in Virginia prior to 1750. My next step was to find a Lee who had married into a Griffin family. I could hardly believe my eyes when I read in the Samuel Griffin Bible record the following:-"Mary Lee, wife of Thomas Lee of Ditchley, our beloved daughter, died December 8, 1758." Samuel Griffin Bible record (Va. Historical Society and Archives Div., Va. State Library). Here I bad found a descendant of Colonel Richard Lee, who had married into a family where the very unusual name of Greenberry appeared. The immediate objectives of my search had been achieved. Further inquiry into the record of Thomas Lee revealed the fact that he took up land in Prince Edward County in 1747 (Swern's Virginia Historical Index). Prince Edward is near Danville where Colonel Greenberry Lee lived as a boy. Thomas Lee had moved to this section no doubt with his young wife Mary Griffin from Northumberland County, Virginia, in 1747. We can establish the fact that some years later, Thomas Lee lived in Johnston County, N. C. (N. C. Colonial records), which was quite near the home of the Fews who lived prior to 1771 at Alamance, N. C. It was at Alamance, N. C., that Colonel Greenberry Lee undoubtedly met his future wife, Elizabeth Few, to whom I have already referred. They were married later in Wrightsboro, Ga.. in 1774. The Fews moved to Georgia from Alamance in 1771. The final evidence which to me was positive proof of Greenberry Lee's parentage developed in this fashion. Thomas Lee of Ditchley lost his first wife Mary Griffin in 1758 after having been married eleven years. He married a second time in 1761, Mary Bryan of Johnston County, N. C. By this marriage I have located three sons, John, Lewis, and Edward. The first two had sons named Greenberry Lee, and the third a son named Green Lee, grandsons of Thomas Lee of Ditchley. Mr. Will Franke, Wheeler Business College, Birmingham, Ala., is my authority. he has done extensive research on the descendants of Thomas Lee, and Mary Bryan; also Airs. H. A. Godby, a genealogist of College Park, Ga. This to me was conclusive evidence that these Greenberry Lees were related, and that Thomas Lee's grandsons were named after their half uncle Colonel Thomas Greenberry Lee, who was a son of Thomas Lee of Ditchley and his first wife Mary Griffin. I have proof that Thomas Lee of Ditchley was the son of Richard Lee and Judith Steptoc. This proof is found in a photostatic copy of the Needham Lee Jr. Bible; (Archives Div. Va. State Library and Va. Historical Society) and is corroborated by the Samuel Griffin Bible record sent to D. A. R. Headquarters, Washington, D.. C., by Rev. Dr. Ceo. W. Beale of Heathville, Va. (copy in the Archives Div., Va. State Library and Va. Historical Society.) This Southern branch of the Lee family has furnished some rather representative citizens;
among them are lawyers, ministers, college professors, a United States Senator. and scores of other good Americans.---Mimms W. Lee..