From information provided by Gail M. Walczyk:

There are two plots at Warwick, the first being on the right of the lane to the house. Graven Stones does not divide the two plots. The stones in the first plot are no longer readable. They should read:

(1) Arthur Upshur:
In memory of Arthur Upshur born in the County of Essex in the Kingdom of England, who died January 26, 1709 in the 85th year of his age (Whitelaw: 582)

(2) Mary Uphsur:
In memory of Mary the Wife of Arthur Upshur born in the County of Warwick in the Kingdom of England who died July the 3rd 1703 in the 85th year of her age (Whitelaw: 582)

(3) Rachel Upshur:
w/o Abel d 25 Dec 1749; age 47 yrs Warw (Graven: 278)

(4) Abel Upshur:
d 30 Oct 1753; 51 yrs Warw (Graven: 278)

Sources:

Mihalyka, Jean Merritt, and Faye Downing Wilson. Graven Stones. Inscriptions from Lower Accomack County,
        Virginia, including Liberty and Parksley Cemeteries. Third ed. Bowie, MD: Heritage Books, 1992.

Whitelaw, Ralph T. Virginia's Eastern Shore. A History of Northampton and Accomack Counties. Vol. I. Camden,
        ME: Picton Press, 1989.