Dear Sarah Glass,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the Population Schedules for the 1790 Census, the Population Schedules for the 1800 Census, the Population Schedules for the 1810 Census, the Population Schedules for the 1820 Census, the Population Schedules for the 1830 Census, the Population Schedules for the 1840 Census in the Records of the Bureau of the Census (Record Group 29) that may contain information about Leroy Clarke Johnson in Kentucky. For more information about the non-digitized schedules, please contact the National Archives at Washington, DC - Textual Reference (RDT1) via email at firstname.lastname@example.org.
For information about the U.S. Census, see the Census Bureau technical documentation and questionnaires.
You may wish to search Ancestry.com or FamilySearch.org for the U.S. Census. There may be a fee for using Ancestry. Instead, check for access at your local library as many library systems subscribe to these sites, making them free for their patrons.
We suggest that you contact Tennessee State Library and Archives to inquire about any probate files, land, judicial or other records that may give more information about the Johnson family. In addition, the FamilySearch Research wiki for Tennessee Genealogy may be helpful
We hope this is helpful. Best of luck with your family research!