Annette married Karl Theodor Helfferich in 1920. Karl (son of Friedrich Gottlieb Helfferich and Juliana Luisa Augusta Knoeckel) was born on 22 Jul 1872 in Neustadt an der Weinstraße, Pfalz, Bayern; died on 23 Apr 1924 in Bellinzona, Schweiz. [Group Sheet] [Family Chart]