per Find A Grave:

Turney Family Farm
Smithville
DeKalb County
Tennessee  USA
Cemetery notes and/or description:
The Turney Family Farm Cemetery is located now on the Dekalb-Cannon County Line on Hwy 53 in an area once known as Smith County. To reach the cemetery coming from Liberty turn left at the Cannnon County line and follow this road keeping to the left for 1/2 mile when the road forks. Cemetery is on the edge of woods beside the road past the first field. The cemetery is in the woods at the end of a field with a large stone approx. 10' from the gravel road. Ruins of an old house are nearby. GPS location 35-57-49N 85-59-62W

1820 United States Federal Census about Isaac Turney
Name: Isaac Turney
Home in 1820 (City, County, State): Smith, Tennessee
Enumeration Date: August 7, 1820
Free White Persons - Males - Under 10: 1
Free White Persons - Males - 10 thru 15: 4
Free White Persons - Males - 16 thru 18: 1
Free White Persons - Males - 16 thru 25: 1
Free White Persons - Males - 26 thru 44: 1
Free White Persons - Females - Under 10: 3
Free White Persons - Females - 26 thru 44: 1
Number of Persons - Engaged in Agriculture: 3
Free White Persons - Under 16: 8
Free White Persons - Over 25: 2
Total Free White Persons: 11
Total All Persons - White, Slaves, Colored, Other: 11

Name: Isaac Turney
Home in 1820 (City, County, State): Smith, Tennessee
Enumeration Date: August 7, 1820
Free White Persons - Males - Under 10: 1
Free White Persons - Males - 10 thru 15: 4
Free White Persons - Males - 16 thru 18: 1
Free White Persons - Males - 16 thru 25: 1
Free White Persons - Males - 26 thru 44: 1
Free White Persons - Females - Under 10: 3
Free White Persons - Females - 26 thru 44: 1
Number of Persons - Engaged in Agriculture: 3
Free White Persons - Under 16: 8
Free White Persons - Over 25: 2
Total Free White Persons: 11
Total All Persons - White, Slaves, Colored, Other: 11

DeKalb County formed 1837

In Mary Turney household, 1830 Federal Census, Smith County, TN:

1 white female: age 50-59 (this is probably Mary Turney, widow of Isaac Turney)
no males in this age group

1. Elizabeth TURNEY b: CA 1805 in Tennessee

1. Abbrev: 1820 United States Federal Census, Population Schedule; NARA Microfilm Publication M33
   Title: 1820 United States Federal Census.
   Note:
   
   
   Repository:
   Name: Ancestry.com
   Provo, Utah
   USA
   Note:
   (downloaded digital image)
   
   Page: Source Citation: 1820 U S Census; Census Place: , Smith, Tennessee; Page: 92; NARA Roll: M33_125; Image: 106.
   Quality: 3
2. Abbrev: U.S., War of 1812 Service Records, 1812-1815
   Title: Ancestry.com, "U.S., War of 1812 Service Records, 1812-1815," database, Ancestry.com Operations Inc, 1999, Ancestry.com (http://www.ancestry.com/: accessed ), ; citing National Archives and Records Administration. Index to the Compiled Military Service Records for the Volunteer Soldiers Who Served During the War of 1812. Washington, D.C.: National Archives and Records Administration. M602, 234 rolls..
   Repository:
   Name: RAS Private Collection (from compiled online database)
   
   Page: accessed, downloaded; 7 December 2012; Isaac Turney data
   Quality: 2
   Text: Name: Isaac Turney
   Company: MCCRORY'S REG'T, WEST TENNESSEE MILITIA.
   Rank - Induction: PRIVATE
   Rank - Discharge: PRIVATE
   Roll Box: 212
   Microfilm Publication: M602
3. Abbrev: United States, War of 1812 Index to Service Records, 1812-1815
   Title: FamilySearch, "United States, War of 1812 Index to Service Records, 1812-1815," database, FamilySearch, FamilySearch (https://familysearch.org: accessed ), ; citing Adjutant General's Office. "United States, Index to Service Records, War of 1812." NARA microfilm publication M602. Washington, D.C.: National Archives and Records Administration, n.d..
   Repository:
   Name: RAS Private Collection (downloaded digital image)
   
   Page: accessed, downloaded; 7 December 2012; Isaac Turney data card
   Quality: 2
4. Abbrev: 1820 United States Federal Census, Population Schedule; NARA Microfilm Publication M33
   Title: 1820 United States Federal Census.
   Note:
   
   
   Repository:
   Name: Ancestry.com
   Provo, Utah
   USA
   Note:
   (downloaded digital image)
   
   Page: Smith County, Tennessee, population schedule, page 92, family #1997, Isaac Turney; online database, Ancestry.com (http://www.ancestry.com: accessed 6 Dec 2012), citing National Archives Publication M33, Roll 125