Hi Lyssa: I enjoyed viewing your tree - thanks so much. This is what I have in my records:

Preston Kellough (son of John Killough & Elizabeth McConnell)
b. 1809, Kentucky - d. Jan 1873 Jefferson Co, Illinois
MARRIAGE #1
Mary Pummell (daughter of John Pummell & Margaret Frantz)
b. Sep 1813, Shenandoah Co., Virginia - d. 21 Feb 1866, Ross Co. OH
CHILDREN
1. Anna Rebecca (6 May 1835 Highland Co. OH-19 Sep 1925 Jackson Co. OH)
2. John S. (abt 1837- )
3. Margaret E. (abt 1838 - )
4. Wilson S. (abt 1842 - 18 Feb 1891, Ross Co.)
5. William Allan (abt 1843 - )
6. Harvey S. (15 Jun 1847 - 22 Dec 1918)
7. Mary B. (16 Sep 1849 Ross Co. OH - 6 Mar 1917 Ross Co. OH)
8. Louisa Margaret (15 Nov 1852 OH - 29 Jun 1933 Ross Co. OH
9. Sarah H. ( abt 1853 - )
10. James B. (abt 1857 - aft 1870)

MARRIAGE #2 (4 Nov 1866 Pike Co. OH)
Assenath Kibby
b. abt 1828 New York
d. aft 1880, probably Illinois

As you can see, Preston married Assenath a few months after Mary died and they then moved to Illinois.