+--Davenport Alger 
+--John D. Alger  (17 AUG 1814-)
|  |        +--Samuel Morison  (1671-29 SEP 1757)
|  |        |  +--  
|  |     +--John Morrison  (1721-1776)
|  |     |  +--Margaret Henry  (1685-30 APR 1774)
|  |  +--Samuel Morrison  (5 MAR 1751/52-1802)
|  |  |  +--Elizabeth Alexander  (ABT 1721-ABT 1811)
|  +--Mary Morrison  (14 MAR 1783-27 OCT 1854)
|     +--Mary Roach  (WFT Est 1736-1760-WFT Est 1779-1849)
Frank Alger 
+--Adeline Morris