+———Peter Allen (3 Aug 1794 PA – 9 Apr 1866)      |  +———Major Allen (1825 PA – 1 Sep 1907)  |   |      |   +———Sarah Shaw (4 Apr 1804 – 8 Nov 1884)  |      Margaret Allen (1858 IL – 1940)  |      +———Mary Unknown (1826 – )