In answer to your questions.
1. Yes, this is the same Anthony in the 1745 will of Cornelius Sale of Essex County.
2. There is no other Anthony Sale living during this time period.
In response to the Essex County entries, those are definitely referring to Anthony Sale, son of Cornelius.Anthony, along with his brother, James, was witness to the sale of 200 acres of his father's land in Spotsylvania County just ten months before Cornelius died.
There is also a March 5,1726 Deed Book 18, pp 288-289, where Cornelius and Anthony witnessed the sale of 250 acres of land from Abraham Stapp to Thomas Jones.Recorded 19 September 1727.
Also, there is an Order Book, entry dated June 17th 1737, Anthony along with Samuel Davis and Elias Newman returned an appraisal of the estate of Martha Newton.
As to the Dorman Order Book entries from Caroline County.I do not have access to those at this time and cannot comment on them.If you could post those or send them to me I could comment on them further.
There is also an entry from October 19, 1761, Anthony Sale of Drysdale Parish in Caroline County, Virginia deeds a negro "lad" named, London, over to his son, Leonard, in Essex County.
Then on July 14, 1770 session of the court, Thomas and Leonard Sale were made Executors after the death of Robert Sale on or before August 9, 1770, which is the date the Caroline Court appointed appraisers for his, Robert's estate.
1782, July, Thomas and Leonard Sale, Executor's of Anthony Sale deceased, Plaintiffs vs. Zachariah Carter and William Carter, Defendants.
1785, May, Anthony Sale is listed in a suit which I presume is a "suit for debt" and only Thomas Sale is listed as Executor.
In the same month two other entries are made, 1) Leonard Sale is listed as a decedent, with James Sullivan as his Administrator, 2) James Rennolds (sic) is listed as a decedent in a suit for debt and Leonard Sale is listed as Administor, now deceased.
3) This list the children's names is complete as far as it goes, but the will of Ann Sale, from 1767, would seem to show that she was also a daughter of Anthony. She apparently never married.She also mentions a sister, Clary in the will.
As to when Ann Sale died.She was dead prior to 1767 in the Robert Parker, Robert Sale division of Slaves which states she was dead at that time.She was apparently dead prior to 1763 when her son, Samuel was made a ward of William Hord upon Anthony's death.
I have suggested that she could have even been with Anthony Sale at Braddock's Defeat at the Battle of Monongahela in 1755 and killed at that time.Anthony is said to have been wounded in the hip during the battle.He was either hired as a wagoner and/or road builder for Braddock's campaign against the French at Fort Duquesne,pronounced Du Cain, now Pittsburg. This story has been passed down through two branches of the family.It is backed up by the fact that a family friend, Mordecai Hord, brother of William Hord, previously mentioned, was said to be the wagon master during the campaign.Many wives and other women accompanied the men during the building of Braddock's Road and the subsequent battle.Between 8 and 50 women were killed on July 9, 1755 during the fighting.
As to her birthdate I have no idea at this time, but can assume it was around the same time a Anthony's which was about 1700.