1  Robert Christoph Langmann (2 Oct 1873 – )   +  Sophie _____       2  Rudolf ’Rudi’ Langmann (1900 – 1917)      2  Franz Langmann (1904/5 – bet 1925 and 1927 Darmstadt, Germany)      2  Marie ’Marichen’ Langmann (1902/3 – )