Isaac first shows up, in records I have access to, in Halifax County, Va. where:
Isaac Austill bought 200 acres of land, on Coleman's Creek, in Halifax County, VA from John Hunter on 15 Aug, 1765. Isaac sold the above land to Pleasant Turner on 18 March 1773. On 20 Sept. 1786(?) Isaac sold 101 acres on Coleman Creek to Pleasant Turner. The 1782 Virginia census lists Isaac as head of a household of 10, in Halifax Co. VA.
About 1786 he, & his family, moved to the Yadkin Valley of North Carolina.
Isaac Austill bought 132 acres (in the Yadkin Valley, Surry County, NC.), at Fox Knobs on Deep Creek from Salathiel Martin, on 6 Aug, 1786. The 1790 Federal Census lists Isaac as head of a household of 10 in Surry Co., NC.
Among Isaac's children are Isaac, Jr., Evan (Sr.), and Major (Sr.); the names of the other children are not known to me at this time. Isaac is believed to have had 9 children.
This is a list of possible descendants of Isaac:
One source lists Isaac's birthplace as Salisbury, NC. This is unlikely as Salisbury, NC was not founded until 1755 and Isaac would have been born by the mid 1740's at the latest. The flow of settlers in that era and other factors make it likely that it could have been Salisbury, Penn., (or Salisbury, Mass. or Conn.) Isaac probably died between 1800 - 1810 (per census records).