I have not found the marriage yet but they definitely were married by the 1880 census with two young children plus two older ones from his first marriage and one older one from her first marriage. I currently estimate Sam & Sarah were married
Abt 1876 since son Samuel was born in 1877.
Descendants of Samuel H. "Sam" Kelly
1 Samuel H. "Sam" Kelly b:
Bet. 1830 - 1832 in
Tennessee .. +Eliza Jane "Liza"
Enloe b: 1833 in
Missouri m:
Abt. 1853 d: Bef. 1875 in ,
Moniteau Co,
Missouri...... 2 J. F. Kelly b:
Abt. 1855 in
Missouri ...... 2 Caledonia Kelly b:
Abt. 1863
...... 2 George H. Kelly b:
Abt. 1868
*2nd Wife of Samuel H. "Sam" Kelly:
.. +Sarah Catherine George b:
Abt. 1842 in
Missouri m:
Abt. 1876
...... 2 Samuel R. Kelly b:
Abt. 1877 in ,
Moniteau Co,
Missouri ...... 2 William H. Kelly b: February 1880 in ,
Moniteau Co,
Missouri 1880 US Census,
Moniteau Co, MO,
Burris Fork Twp
442C/203/212 Kelly, Samuel H wm 48 farmer & merchant TN VA TN
Sarah C wf 38 wife keeping house MO TN MO
Caledonia wf 17 dau MO TN MO
George H wm 12 son at home MO TN MO
Samuel R wm 3 son MO TN MO
William H wm 3/12 son MO TN MO
?Walton?, Monroe wm 17 stepson at home MO VA MO