+———Andrew W. Slifer (6 Jun 1829 MD – 1896 Mt. Morris, Ogle Co, IL)  |      Elmer Slifer (9 Feb 1868 Hagerstown, Washington Co, MD – 1946 Ogle Co, IL)  |          |   +———Henry Row (1784 Lancaster Co, Pensylvania – 1876 Franklin Co, PA)  |   |  +———Maria Ann Row (13 Mar 1836 Washington Co, MD – 16 Sep 1916 Mt. Morris, Ogle Co, IL)      |              |   +———Joseph Zimmerman      |   |      +———Sarah Zimmerman (18 Aug 1799 Washington Co, MD – 25 Jun 1852)          |              +———Anna Hershberger