https://gw.geneanet.org/stephen1971?lang=en&n=bonnem&oc=&p=ernst
- Born August 17, 1893 - Saarwellingen, Saarlouis, Saarland, Germany
- Deceased March 18, 1988 - Zürich, Zürich, Switzerland, aged 94 years old
Parents
- Bernhard Bonnem 1855-1895
- Cilli Klopfer 1858-1931