+--J. T. Watson 
Michael Todd Watson 
|  +--Howard Hinton Harmon  (15 FEB 1914-24 DEC 1983)
+--Vaughn Dell Harmon 
   |                             +--John Killough\Killogh  (CA. 1630-1689)
   |                          +--John Killough  (1657-CA. 1715)
   |                          |  +--Mary Hyde 
   |                       +--John Killough  (1689-1754)
   |                       |  +--Anne MacNeil 
   |                    +--Samuel Ezekiel Killough  (8 DEC 1719-22 OCT 1749)
   |                    |  +--Jean Young 
   |                 +--Isaac Killough  (1740-1795)
   |                 |  +--Mary ______ 
   |              +--James Killough  (1772-1 OCT 1833)
   |              |  +--Mary ______ 
   |           +--Charles Martin Killough  (1820-)
   |           |  +--Sarah Mitchell 
   |        +--Isaac B. Killough  (27 OCT 1844-13 NOV 1921)
   |        |  +--Mary M. Barton\Berton 
   |     +--Thomas Harvey Killough  (MAR 1866-)
   |     |  |                    +--John Killough\Killogh  (CA. 1630-1689)
   |     |  |                 +--John Killough  (1657-CA. 1715)
   |     |  |                 |  +--Mary Hyde 
   |     |  |              +--John Killough  (1689-1754)
   |     |  |              |  +--Anne MacNeil 
   |     |  |           +--Samuel Ezekiel Killough  (8 DEC 1719-22 OCT 1749)
   |     |  |           |  +--Jean Young 
   |     |  |        +--Isaac Killough  (1740-1795)
   |     |  |        |  +--Mary ______ 
   |     |  |     +--James Killough  (1772-1 OCT 1833)
   |     |  |     |  +--Mary ______ 
   |     |  |  +--Jeremiah Burns Kellough\Killough  (14 MAR 1818-1890)
   |     |  |  |  +--Sarah Mitchell 
   |     |  +--Nancy Ann Kellough  (4 APR 1843-)
   |     |     +--Elizabeth "Eliza" Linn\Lynn  (1827-)
   |  +--John Arthur Killough  (3 FEB 1895-17 APR 1969)
   |  |  +--Hestella May Hatfield  (1873-1936)
   +--Lura Faye Killough 
      +--Selma Lee Reynolds  (23 MAR 1898-15 JAN 1926)