+--William R. McGrew 
Mary Hedessa McGrew  (23 OCT 1862-21 JUN 1865)
|        +--Peter Laughlin 
|     +--John Wilson Laughlin  (29 MAR 1772-17 JAN 1849)
|     |  +--Sarah Wilson 
|  +--William Laughlin  (8 APR 1800-10 FEB 1873)
|  |  |  +--William H. Forsythe 
|  |  +--Violette Forsythe  (1775-)
|  |     +--Elizabeth Johnson 
+--Sarah J. Laughlin  (ABT 1837-)
   |  +--Robert Forsythe 
   +--Hedessa Forsythe  (30 JUL 1801-23 SEP 1879)
      +--Mary Laughlin