+———Frederick Rohrer (1 Apr 1792 – 16 Jul 1855 Rohrersville, Washington Co, MD)  |      Martin T. Rohrer (9 Jun 1827 Rohrersville, Washington Co, MD – 11 Jan 1911 Mt. Morris, Ogle Co, IL)  |          |   +———Conrad Thomas  |   |  +———Elizabeth Thomas (10 Jan 1801 – 1852 Rohrersville, Washington Co, MD)      |          +———Elizabeth Conn