1  Kowalczyk    +  Friedrich (Fritz) Langmann (1844 Marggrabowa, Poland – )      2  Johann Langmann (1870 Marggrabowa, Poland – )      2  August Langmann (1872 Marggrabowa, Poland – )      2  Fritz Langmann (1873 Marggrabowa, Poland – )      2  Friedrich Langmann (1874 Marggrabowa, Poland – )