Elizabeth married again after John’s death, most likely in the1750s when her children were in their teens or early twenties because there is no record of her living on the Walker estate with her second husband, Captain Obediah Marriatt. He was a lawyer from Scotland who began practicing in the area in 1745 and died in 1760. They lived for a while at Bewdley, a colonial house on the Mattaponi River above Walker, Virginia. She was living there in 1770.

In 1781 she gave brandy (used like cash) to support the Revolutionary War.

Her great-grandson, John Walker (1785-1867) The Diarist, noted in his diary she married “Merrit" who was a lawyer of tolerably large possessions. The place named Bewdley where Archie Pointer lives and Rosemont where Phil Pendleton died belonged to him, also a large tract of land called Smithfield, land he owned and devised in his will to be rented out for the support of poor children as long as the sun rose and swamps were running, and assist in schooling them." Another account of the device providing for poor orphaned children is noted by Russell B. Gill in his Master of Arts Thesis paper at the University of Virginia, Secondary Education In King and Queen County, Virginia, 1691-1938. He states that the bequest was in Elizabeth Marriott's will and that it provided for the education of poor orphaned children in St. Stephen's Parish. It comprised one thousand acres of land divided into one-hundred acre lots, known as Smithfield, that was to be admisitered by the vestry-men of St. Stephen's Parish.

John Walker’s description continued, "Our great-grandmother, I just can recollect. She lived with my father Humphrey Walker (1762-1820) some few years after I was born on the hill as its now called Locust Grove. From there she moved and lived with her grandson Captain William Fleet, then living some miles below King and Queen C. H. on the river (Rural Felicity), now owned by a man named Spencer, where she lived and died, I believe.”

Death date assumed from an entry in Baylor Walker Ledger dated Dec 1788 noting on a ledger page specific to Elizabeth Marriot a certain amount due before the division of the estate.