The About mentions a court case naming only THREE:
It has now been proved that Sarah Garnett Foster was married to William Taylor of Albemarle who died around 1802 and whose estate was probated in 1803, and shows that he had no wife at that time, but had three children, George, John, and Nancy. No others. Court cases in 1833 and 1835 show that Sarah Garnett Foster had been the wife of William Taylor and had three children George, John, and Nancy. This information is in the court cases of Taylor vs Dowell.
The evidence is shown in Maupin's index of Albemarle miscellaneous papers. See John Foster page, and William, Sarah G. Taylor page.
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https://www.genealogy.com/forum/surnames/topics/foster/7559/