+———Carl Johann Langmann          |      +———Christian Langmann (1791 Marggrabowa, East Prussia, Germany – )      |   |          |   +———Kleij(?) Christina Klein      |  +———Friedrich Langmann (1835 – )  |   |      |   +———Anna Schneider  |      August Langmann (1872 – )  |      +———Wilhelmina Kowalczyk