No will however looks like the land was given to 2 of his sons prior to 1771:
CHRONICLES OF THE Scotch-Irish Settlement IN VIRGINIA EXTRACTED FROM THE ORIGINAL COURT RECORDS OF AUGUSTA COUNTY 1745-1800
CIRCUIT COURT RECORDS, SECTION "I."
Bryan vs. Lewis and Johnston--O. S. 303; N. S. 108--Bill, April, 1820, by James Bryan, Jr., of Botetourt. Prior to 1771 Wm. Bryan owned 400 acres on Roanoke River, near Salem , and divided it between his sons, William and James, who entered 190 acres adjoining and patent issued in name of James, 16th February, 1771. James sold out all to Andrew Lewis, 28th March, 1788, who sold to his brother William . James moved to Mason County. Wm. Bryan, Jr., died July , 1806, testate, devising his interest to his son, orator . James, Sr., had a son Andrew. Wm. Lewis sold to Dr. John Johnston and moved to Alabama. Will of William Bryan of Roanoke in Botetourt County. Wife, Elizabeth; sons, William , James,
John; daughter, Catherine Cole, wife of John Cole; grandson , Wm. Cole. Dated 27th June, 1805. Recorded in Botetourt,
William and wife Margaret lived at Ballyroney Co. Down, IR . They were Presbyterians and when they left for America they carried with them a document from their church dated 17 April 1718. STORY - William and Margaret Bryan sent their son, John Andrew into the woods to cut a stick to make a handle for a hook used in weaving, and he was arrested for poaching. After much trouble and espense, his fathe r got him clear, and immediately sailed for America, where , as he said, "timber was free and there were no constables ". (from" Notable Southern Families", p. 40)
It is not known for certain how many children were born in IR and made the sailing with their parents. For sure John Andrew Bryan was born in IR sometime before 1717.
William and Margaret first settled in Pennsylvania, then West New Jersey and later moved to VA. William Bryan is listed many times in deed , Records, etc. in Agusta Co. VA. Reco rds, including disposition of land to his sons.
Possible virus(http://familytreemaker.genealogy.com/users/d/o/u/Connie-Douglas-WILSONVILLE/WEBSITE-0001/UHP-0717.html)Possible virus
Chronicles of the Scotch-Irish Settlement in Virginia:
Extracted from the Original Court Records of Augusta County, 1745-1800, Volume 1 (Google eBook)