I have been working on a theory that Sarah "Barclift" was actually originally Sarah Knowles, daughter of Thomas Knowles (d. 1766, Perquimans) and Elizabeth Arnold (d. 1808, Perquimans).
(Thomas and Elizabeth also had sons Abner, John, William.)
Elizabeth married Durant Barclift (d. 1775, Perqumans) very soon after the death of Thomas, but I haven't seen any documents establishing Durant as the father of Sarah.
My work suggests that Sarah Knowles married a (Moses?) Jackson and begat Tully Jackson, but I don't have any documentation on that marriage, just that Tully Jackson was her grandson. She later married Wilson Weeks and later a Leigh. Her will as Sarah Leigh was proved in Perquimans in 1833.
There is related documentation posted on my Ancestry tree. I welcome your help.