Speculation on the birth family of Sarah, wife of Samuel Magruder (son of Alexander the immigrant)
Official records show a close relationship between the Magruder, Mills and Willett families in colonial Maryland.
1. At William Mills death in 1676, his will (Calvert County) names wife Tabitha, sons William Jr. and John and unnamed daughters. Overseers of the estate were Alexander Magruder, Samuel Tayler and Ninian Beall. One of the witnesses to the will was Richard Chaffey.
2. In 1677 when Alexander Magruder died his will named almost the same set of overseers: Samuel Taylor, Ninian Beall and Nathaniel Truman.
3. Tabitha, widow of William Mills, remarried to Thomas Blanford. Thomas Blanford's will of 1698 (Prince George's County) names as overseers: Samuel Magruder, William Mills (Tabitha's son), and Edward Willett (husband of Tabitha's daughter, Tabitha Mills).
4. Richard Chaffey, a witness to the will of William Mills Sr.has his will proved in 1698 (PGC). Overseers were Samuel Magruder and Edward Willett.
5. Samuel Magruder, Edward Willett and a John Smith were asked in the will of Thomas Sprigg Sr. to divide the residue of his estate in 1704 (PGC) Connections here somehow. Thomas Sprigg's daughter, Eleanor,married Thomas Hilleary. When Thomas Hilleary died, William Mills Jr signed the inventory as next of kin.
6. Samuel Magruder's own will of 1711 (PGC) was witnesses by Edward Willett, Tabitha Willett (Edward's wife) and an Ann Smith
7. Benjamin Berry, in his will of 1719 (PGC) named as overseers: Samuel Magruder Jr., Thomas Hilleary Jr., Edward Willett and John Clagett. Benjamin Berry's wife was Mary Hilleary, brother to Thomas Jr.
9. Anchovie Hills,the home plantation of Alexander Magruder, bordered Trenant, the home plantation of William Mills Sr.
10. Samuel and Sarah named a son William and had a grandson by their son Samuel, named William Mills Magruder.
To play devil's advocate, both Samuel Magruder and Edward Willett were PGC officals. It might be expected that they would be asked to witness county documents. Still, all wills where they were overseers together seem to have a family connection and neither acted as overseer alone in the probate records of the county.
So, I think, but can not prove, that Sarah, wife of Samuel Magruder, was the daughter of William Mills Sr. and his wife, Tabitha