I see that James is listed as Ann Waugh's great grandson in 1871:
Bentpath, Westerkirk
Ann Waugh, widow, 75, b. Canonbie
Janet Young, sister, unm, 85, b. -do-
William Murray, grdson, unm, 31, ag lab, b. Dumfriesshire
James Prior, grt grdson, 2, b. -do-
Thomas McMurdo, lodger, m, 64, carter, b. -do-