+———Johann John Langmann (1749 Hesse-Darmstadt, Germany – 2 May 1838 Rohrersville, Washington Co, MD)      |  +———Joseph Longman (1795 Washington Co, MD – )  |   |      |   +———Eve Unknown (1758 Washington Co, MD – )  |      George Longman (Oct 1835 – 1909 Eaton, OH)  |      +———Mary Ann Keefauver (1802 – )