+———Johann John Langmann (1749 Hesse-Darmstadt, Germany – 2 May 1838 Rohrersville, Washington Co, MD)              |          +———Jacob Longman (24 Oct 1787 Washington Co, MD – 8 Aug 1871 Frostown, Frederick Co, MD)          |   |              |   +———Eve Unknown (1758 Washington Co, MD – )          |      +———George Longman (6 Sep 1818 Frederick Co, MD – 7 May 1882 Frederick Co, MD)      |   |              |   |   +———Jacob Werenbaker      |   |   |      |   +———Susan Wertenbaker (23 Jan 1787 MD – 9 Jun 1869 Frederick Co, MD)      |       |          |       +———Elizabetha Unknown      |  +———Jacob O. Longman (Apr 1860 Frederick Co, MD – )  |   |      |   +———Rebecca Holtzman (29 Jun 1825 MD – 20 Aug 1883 Frederick Co, MD)  |      John M. Longman (Dec 1891 IL – 1918)  |      +———Leatha B. Smice (Apr 1873 IL – 1960)