+--Andrew McNay 
+--James McNay  (1824-4 MAR 1876)
|  +--Jane ?  (-9 SEP 1878)
William McNay 
|        +--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 
+--Helena F. Laughlin  (1833-17 JUN 1906)
   |  +--Robert Forsythe 
   +--Hedessa Forsythe  (30 JUL 1801-23 SEP 1879)
      +--Mary Laughlin