Four of the children of William Thomas and Elizabeth Hill are given in the article by John Bennett Boddie in the William and Mary Quarterly;1858 John Thomas is given as their only known son in the book by Worth S. Ray.551

The known children of William Thomas and Elizabeth Hill are enumerated by John Bennett Boddie1858 as:
(1) Elizabeth Thomas, m. (1) John Boddie who died 1720. Will dated March 10, 1720, probated 25 April, 1720 (Great Book, p 27).
(2) Barnaby Thomas, of Bertie Co NC, d 1735. His will was probated by Col. John Dawson, 11 Dec 1735. He mentions wife Sarah, brother Philliip Thomas, brother in law John Dawson, son Elisha and unborn child; brother Phillip Exr.
(3) Phillip Thomas of North Carolina.
(4) Thomas Thomas of North Carolina.

“William Thomas is mentioned as “brother” in the will of John Jennings, Jr., who married Mary Hill. As John Jennings’s own sisters were Mary Seward, Martha Jennings, and Sarah Luck (W&M 7, p. 241-250), this would show that William Thomas married his wife’s sister. William Thomas is mentioned in Silvester Hill’s will and he also appraised the estate of Capt. James Day, a relation of his wife, April 28, 1702.”1858

The dates of birth and death of Elizabeth Hill are not known. She was certainly born before the death of her father in 1675 because she is mentioned in his will. She was likely very young at the time her father wrote his will because she is listed last and is not given any specific items.