"Nat. J. Kellow died at Nolensville, b. 11/17/1837, died 2/22/1915, buried Waller Cemetery, Davidson County, TN. Father William Kellow (son of Thomas - see Will above), mother Fannie Nuby, informant Thomas Waller."
There's a John Waller and a (Oswal?) Newby just a few entries up from Hezekiah "Kellough" on the 1840 Williamson County census (p. 162).There's also a William Waller on the the same page as Arthur "Kellough" in 1840 (p. 164).