+--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)
Louise "Lucy" Killough  (1905-)
+--Rosella E. Allsup  (19 NOV 1868-23 OCT 1952)