+———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 – )  |      Charles Longman (Jun 1869 OH – )  |      +———Susan Unknown (Jun 1837 OH – )