The birth and death dates were obtained through a family tree on ancestry.com and have not been verified.

A HISTORY OF WATAUGA COUNTY, NORTH CAROLINA with Sketches of Prominent Families, by John Preston Arthura, page 289

"James, youngest son of Joseph Brown, set-
tled on Roan Creek, Tenn., and married Harriet Farthing. Their children were Hamilton, who was killed by a tree on Roan Creek when fourteen years old ; Nancy, who is still living ; Captain Bartlett Roby Brown married Callie Wagner, daughter of "Gray Jake;" Stephen Justice married a sister of B. R. Brown's wife and died in 1913; Mary, wife of William Shull, both now dead, left a son, James A., who lives at Neva; Sallie, who died when nine or ten years old ; Eva, yet living at Neva ; Martha, who married Norman Wills and lives at Silver Lake ; James Julian, who died at twenty-one, and Dudley, who married a Miss Williams and lives near Knoxville."

1850 United States Federal Census
Name: James Brown
Age: 38
Birth Year: abt 1812
Birthplace: North Carolina
Home in 1850: District 4, Johnson, Tennessee
Gender: Male
Family Number: 61
Household Members:
James Brown, age 38
Harriet N Brown, age 34
Joseph H Brown, age 11
Nancy E Brown, age 10
Barton R Brown, age 8
Stephen J Brown, age 6
Mary W Brown, age 5
Anna E Brown, age 0
Elizabeth Kendall, age 39

1860 United States Federal Census
Name: James Brown
Age in 1860: 48
Birth Year: abt 1812
Birthplace: North Carolina
Home in 1860: District 4, Johnson, Tennessee
Gender: Male
Post Office: Bakers Gap
Household Members:
James Brown, age 48
Harriet Brown, age 44
Nancy E Brown, age 20
Barton R Brown, age 18
Stephen J Brown, age 16
Mary W Brown, age 15
Anna E Brown, age 10
Martha C Brown, age 7
James J M Brown, age 5
Dudley F Brown, age 3