+--Capt. David Spear 
      +--Thurston W. Spear  (12 MAR 1820-)
      |  +--Nancy Farnsworth 
   +--Thelbert Spear  (4 JUN 1846-27 OCT 1897)
   |  |                       +--John Killough 
   |  |                    +--John Killough  (1630-)
   |  |                 +--John Killough  (1657-CA. 1715)
   |  |                 |  +--Mary Hyde 
   |  |              +--Robert Killough  (1681-1737)
   |  |              |  +--Anne (McNeil) MacNeill  (CA. 1659-)
   |  |           +--Finley (Killough) Kelloch  (1711-)
   |  |           |  +--Margaret Finley 
   |  |        +--Alexander Kelloch  (1740-14 FEB 1826)
   |  |        |  |  +--John Young 
   |  |        |  +--Mary Young  (12 JUN 1700-21 SEP 1795)
   |  |        |     +--Catherine?  
   |  |     +--Alexander Kalloch  (26 SEP 1770-MAY 1853)
   |  |     |  +--Eleanora Gault 
   |  |  +--Dea. Mero Kalloch  (8 FEB 1801-11 MAR 1870)
   |  |  |  |  +--Josiah Mero 
   |  |  |  +--Elizabeth Mero  (1775-3 SEP 1847)
   |  |  |     +--Meriah Andrews 
   |  +--Lydia M. Kalloch  (6 DEC 1822-20 FEB 1878)
   |     |  +--Robert Matthews 
   |     +--Ruth P. Matthews  (10 SEP 1801-12 MAR 1891)
   |        +--Lydia Prior 
+--Clifford Mero Spear  (29 MAY 1879-21 FEB 1853)
|  +--Hattie Austelia Simmons  (-4 SEP 1929)
Mildred Ada Spear 
|  +--Hudson Farrington 
+--Edith Frances Farrington  (19 AUG 1881-)
   +--Marcia A. Hall