1  Gustav Adolph Langmann (22 Dec 1842 Neustrelitz, Mecklenburg – 27 Mar 1916 New York City)   +  Katie Zinsser (1 Apr 1858 New York City – 13 Jul 1931)      2  Heinrich (Henry) William Langmann (6 Apr 1883 New York City – 16 Apr 1947 New York City, NY)         +  Catherine Campbell ( – 1952)      2  Otto Friedel Langmann (4 Dec 1884 New York City – )         +  Catherine O’Byrne             3  Constance (Connie) Mary Langmann (19 Jun 1928 – )      2  Alfred Gustav Langmann (16 Apr 1890 New York City – )         +  Margot Hesse             3  Elisabeth Langmann (27 Apr 1926 – )               +  Thomas Killip             3  Robert Drewes-Langmann (3 Apr 1929 – )            3  John Alfred Langmann (4 Nov 1933 – )      2  Emily Helen Langmann (12 Dec 1896 New York City – 29 Sep 1988 Santa Barbara, CA)         +  Earl Edward VanDerwerker (7 Apr 1890 – 2 Nov 1947)            3  Jean Katharine VanDerwerker (1 Jan 1923 – 29 Sep 2000)               +  Bernard Burgess                   4  Linda Burgess                   4  Bonnie Burgess             3  Earl Edward Jr. VanDerwerker (20 Dec 1924 – 30 Mar 1982)               +  Nancy Cuyler Bangs ( – 3 Apr 1998)                  4  Gerret VanDerwerker                   4  Grey VanDerwerker                   4  Dirk VanDerwerker (1954 – )