+--John Killough\Killogh  (CA. 1630-1689)
                  +--John Killough  (1657-CA. 1715)
                  |  +--Mary Hyde 
               +--Robert Killough  (1681-1737)
               |  +--Anne MacNeil 
            +--David Killough, I  (CA. 1712-1761)
            |  +--Margaret Finley 
         +--Samuel Killough  (SEP 1756-6 NOV 1834)
         |  +--Mary ______ 
      +--David A. Killough  (1772-)
      |  +--Agnes "Nancy" ______  (1753/4-10 JAN 1835)
   +--James Gardner Killough  (1790-JUL-NOV 1853)
   |  +--Sophia Gardner  (1775-1851)
+--Thomas David\David Thomas Killough  (1825-31 OCT 1893/95)
|  +--Sarah ______  (1810-)
John Pryor Killough  (14 APR 1852-25 NOV 1939)
+--Sarah\Eliza Jane Perry  (1823-1870-1877)