+---Joshua Flack
+---Nathaniel Flack (ABT 1752-)
+---Nathaniel Flack (ABT 1773-DEC 1853)
| +---Sarah Hallet 
(ABT 1750-1817)
+---Nathaniel Flack (DEC 1801-18 MAR 1881)
| +---Elizabeth Carmen (ABT 1779-AUG 1815)
William Flack (ABT 1830-BET 1871 AND 1897)
+---Susan Laws (27 JUN 1804-18 JUL 1871)
+---Jean ? (ABT 1775-)