+--James NICHOLSON  (1793-1860)
Mercer NICHOLSON  (1819-12 JUL 1881)
|     +--Rev John CHASTAIN, SR  (1742-31 JUL 1805)
|  +--Edward Brigand CHASTAIN  (29 MAR 1769-1834)
|  |  +--Mary O'BRYAN  (1743-1790)
+--Lavinia CHASTAIN  (1796-1865)
   +--Hannah BROWN  (27 JAN 1769-1834)