Individual Details

Mary was named as Mary Austin in her father's will.

Found in a MyHeritage database - not likely this Mary, although some have placed her as a daughter of William - she's said to have been born in Pennsylvania and William McBee never lived in Pennsylvania. That would immediately eliminate any possibility. The proposed birth puts her out of the order of the children in William's will and they otherwise seem to be in birth order. She has been given a middle name and none of William McBee's other children had middle names. There is much conflict in almost all data about her, her husband, her children.

A Mary Susannah Crenshaw Austin, born McBee was born 8 Jan 1726 in Pennsylvania [possible if she was one of the oldest children but that's not the order in the will, but since middle names were virtually unknown and none of the other children of William McBee had a middle name - this immediately makes me question the accuracy - but this family is shown as living in Halifax and then Pittsylvania Co VA.]
She is shown as married to John Champness Austin II. Name also appears as Mary Elizabeth - even more unlikely since William McBee had a daughter Elizabeth who married a Howard.
Children: John Champess III, b. 1746 [ she was certainly born say by 1730], d. 1815, Madison Co AL; Capt Stephen, b. 1755 [why so long after John?]; David b. 1756; Isaiah, b. 1759 in Surry NC, Thomas, b. 1761 or 1748. William, b. 1761. Hannah, b. 1763, d. 1813.. Margaret Mary, b. 1763 in Hanover VA, d. 1797.
This Mary Austin died in Sumner Co, TN, 15 Jun 1815

Birth

Abt 1734

King George County, Virginia

Father	WILLIAM McBee (1700 - 1759)
Mother	SUSANNAH Vardry ( - 1762)
Sibling	WILLIAM McBee (1725 - 1812)
Sibling	Samuel McBee (1728 - )
Sibling	Elizabeth McBee (1732 - )
Sibling	Joannah McBee (1733 - )
Sibling	Vardry McBee (1734 - 1800)
Sibling	James McBee (1737 - )
Sibling	Mathias McBee (1738 - 1817)