+--Andrew McNay 
   +--James McNay  (1824-4 MAR 1876)
   |  +--Jane ?  (-9 SEP 1878)
+--Edgar R. McNay  (3 MAY 1865-27 FEB 1939)
|  |        +--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 
Helen McNay 
|  +--Eli Wilkins 
+--Clara Wilkins  (1866-1941)
   +--Susan Kelley