Since Capt. John was associated with Francis Rice in 1676, both as burgess for Warwick County and with the fort at Appomatox, it is tempting to think he was Mary's grandfather. This Francis Rice shows up as early as 6 Jan. 1639/40 when he and Thomas Ranishawe were appointed tobacco viewers for the area below Batchelors Creek to the upper side of Waters Creek. Francis received his first land grant of 200 acres "on the forest of Waters River" on 29 Aug. 1643, and apparently another 200 acres "near Merry Point upon Deep Creek" on 26 Mar. 1646, see Nugent, Vol. 3, pp. 146, 174, both of which are in the neighborhood of Langhorne's place at Gambell. Probably it was his son Francis Rice and Mary Rice who deeded land in Warwick County to Charles Stuckey in Jan. 1696/7, (see Va. Hist. Soc.), but by 1704 it was the Rice orphans who were listed with 200 acres in the Quit Rents for Warwick, (see Va. Land Records).
I need more info on Francis Rice's involvement with the FORT AT APPOMATTOX.... Appomattox County was cut out of Prince Edward County a few years after 1754. Do not recall the exact date. MY Francis Rice (c.1711 - c.1771)lived on the western edge of P.E. County, near Appomattox and Charlotte Counties.. He first appears in Henrico County in deed records in 1731. I believe this OLD Francis Rice in Warwick, who died before 1695, was possibly his GRANDfather..