Individual Details

http://genforum.genealogy.com/gentry/messages/1917.html
From a Genforum Post:
Bartlett Gentry was the third son of Robert Gentry and Judith Joyner Gentry. He was born in Albemarle County, Virginia, about 1761, then moved with his family to the Tennessee territory. In Greene County, on February 1, 1790, Bartlett married Elizabeth Whitman, who was born about 1772. In 1793, he received a land grant of 100 acres in Jefferson County. Active in civic affairs, Bartlett Gentry served as roads supervisor in 1800 and served on juries in Jefferson County in 1794, 1797, 1798, 1801, and 1802. He was appointed executor for the estate of his brother-in-law James Randolph, and was also guardian for four of the Randolph children. In 1805-1806, Bartlett sold his land in Jefferson County. He is next mentioned in the records of White County, Tennessee, as security for Edward Wade, constable, in 1808. White County is near the center of Tennessee. Both White and Jackson Counties were formed from Smith County. Later, Overton County was created from Jackson County. Once again, the family probably moved around much less than the census and other records seem to indicate. According to The Gentry Family in America, in his old age, Bartlett moved to Jackson County, Alabama to be near some of his children, including sons John and Bartlett, Jr.
Robert Gentry, named for his grandfather, was the oldest known child of Bartlett Gentry and Elizabeth Whitman Gentry. He is listed in the 1840 census of Jackson County, Tennessee, as the head of the family, 41-50 years old, making his birth between 1790 and 1799. It was probably closer to 1790, because his widow Nancy was listed as 60 years old in the 1850 census, indicating that she was born in 1790. Her birthplace was Virginia. Robert appears as the head of a family in Jackson County, TN in 1820, 1830, and 1840 and as a landowner and taxpayer in both Smith County and White County. In addition, he had land surveyed in present-day Putnam County in 1826. His land was on the middle fork of Mine Lick River and the waters of Martin Creek.18 Putnam County was established in the 1850s from parts of Overton, White, and Jackson Counties.

http://www.ajlambert.com/gentry/fgs_bg.pdf
Family Group Sheet which includes a great deal of documentation and is saved in my Evernote files, lists the following children for Barrlett:
Robert, b. about 1788, married Nancy Harris
Joyner/Joiner, b. abt 1794 married Nancy
John, married Mary Smith
James Bartlett, b. say 1803, married Medecea
Jessey, b. ca 1805
Jennie, b. ca 1807
Elizabeth "Betsie", b. ca 1809
Mary "Polly", b. ca 1811
Sarah "Sallie, b. 1813
Katie, b. about 1815, married Wesley Green

Birth	1761	Albemarle County, Virginia
Marriage	1 Feb 1790	Albemarle County, Virginia - Living
Death	1857	Alabama

Spouse	Living
Child	John Gentry (1790 - 1852)
Child	Joiner Gentry (1793 - )

Father	Robert Gentry (1726 - 1811)
Mother	Judith Joyner (1733 - 1803)
Sibling	Sarah Gentry (1760 - 1795)