Who can help clarify the problem of Ann Archer's parentage?
There are LDS files that show Ann as the daughter of Sampson Archer, and refer to her as "Betsy Ann." But the contemporary records I can find on the Mathews and Archer families make this doubtful.
We know from the will of John Mathews (in Chalkley's Chronicles, proved 16 Nov 1757) that his wife was Anne. She is not identified there as Ann Archer.
She is indentified as Ann Archer in some later discussions of the Mathews family and others of Augusta County. Here is one source: Jos. A. Waddell, Annals of Augusta County, Virginia, from 1726 to 1871. Bridgewater, Virginia: C.J. Carrier Co., 1958. pp. 309-310 "THE MATHEWS FAMILY John Mathews, one of the first settlers in Borden's tract, about 1737, died between April 20, 1757, the date of his will, and November 16, 1757, the date of probate. His wife was Ann Archer, daughter of Sampson Archer, a fellow emigrant. His sister, Betsy, was the wife of Robert Renick. His children were John, Joshua, Richard, Sampson, George, Archer, William, Jane, Anna, Rachel and Elizabeth. "Border Warfare" says that five of the seven sons were at Braddock's defeat, which statement may be set down as not entirely correct, to say the least of it."
Waddell names her Ann Archer, daughter of Mathews' fellow immigrant Sampson Archer.
But the contemporary records make it seem more likely that Ann was a SISTER of Sampson Archer, not a daughter.
The earliest record I have found of Sampson Archer in Chalkley is dated 1742, when Sampson appears with his brother John and one Robert Renick in Captain John Smith's muster (vol. 2, p. 507). The latest I can be sure of is 1772, when Sampson testified to his brother John's spousal abuse and drunkenness. That testimony shows that John and Sampson were immigrants from Ireland, where John and Rebecca were married "upwards of 30 years" earlier. This places Sampson in Ireland around 1740, as witness to a marriage, and suggests that he was born between 1700 and about 1720, making him about age 20-30 when he witnessed the marriage, about 20-25 as a member of Smith's muster, about 70 when he testified against his brother.
If this is correct, and if Ann Archer Mathews was his daughter, she would have been born no earlier than about 1720.
But the 11 children of John Mathews and Ann Archer, from Chalkley's records, appear to have been born from about 1720 to 1739. Therefore it seems likely than Ann Archer would have been born by about 1700, and would be of the same generation as John Mathews and Sampson Archer.
This suggests to me that EITHER Ann Archer is not the mother of all John Mathews's children, OR that she is the sister rather than the daughter of Sampson Mathews.
If she is Sampson's daughter, and born about 1720, then she could have been the mother of George Mathews, who was born 1739.
But John Mathews would likely have had an earlier marriage that produced George's older siblings.