Sarah was married 10/19/1715 to Francis Armistead, born 1690, died 4/4/1719. She was mother by Francis to Elizabeth Armistead Carter and John Armistead, they born 1716 & 1718 respectively. Found it interesting that she (Sarah) listed as widow and executrix of Francis married again on 11/8/1722 to a Joseph Russell. Source listed was Marriage Records, p 175. Additionally, in the Wills of Richmond County, Va for 1699-1800, p. 572, it says Joseph Russell of province of Maryland, will, 11/26/1748, 5/5/1749 - dau Lydia Beech, sons Solomon, Daniel, and Wm, dau Mary, in case beloved wife Sarah will return into the Colony of VA within 3 months after my decease, and there dwell during her natural life. Another source in my notes is Richmond County DB, p 466, Lease & Release 8/5th or 6th/1728.
Also, this Joseph Russell made a deposition against Ralph Armistead in 1735. Something about if he (Ralph) defaulted on a will to Francis, son of Ralph Armistead. Which Ralph's, possibly dad, son or brother to Francis would need to be determined by dates and lineage. Source: RIchmond County Will Book 4, p.304 Order Book 8 1718-1721, p.103, 113, 131.
I found it interesting as this adds some additional Russells to the mix and complicates the # of Ralphs and Francis'.