+———Johann Friedrich Langmann (abt 1811 Rosenow, Mecklenburg-Schwerin – 12 Apr 1889 Newlands, Cape, South Africa)      |  +———Ernst Karl Langmann (abt 1844 Rosenow, Brandenburg – 5 Aug 1887)  |   |      |   +———Carolina Friederike Schultz (abt 1811 Rosenow, Brandenburg – 18 Jan 1864 Cape Town, South Africa)  |      Ethel Maud Langmann (1879 Cape, South Africa – )  |          |   +———John Thomas  |   |  +———Sarah Thomas