Karl Rudolf Bischoff1

Family 1: Margaretha Fanny Riggenbach, b. 22 Feb 1892

Family 2: Martha Gertrud Riggenbach, b. 10 May 1894

Sources:

  1. Werner Hug, Stammtafeln Rickenbacher Rickenbach Riggenbach von Zeglingen Rünenberg Oltingen Basel, 2003, transcribed to PAF by Franz Otto Nostitz in 2009..