- This article was considered for deletion at Wikipedia on July 29 2017. This is a backup of Wikipedia:Engelbert_Sonneborn. All of its AfDs can be found at Wikipedia:Special:PrefixIndex/Wikipedia:Articles_for_deletion/Engelbert_Sonneborn, the first at Wikipedia:Wikipedia:Articles_for_deletion/Engelbert_Sonneborn.
Engelbert Sonneborn (born February 9, 1938) is a German retired career counselor, who was independent candidate at the 2017 German presidential election. He was supported by the Pirate Party Germany and the Die PARTEI and received 0.79% of the electoral vote. His son is the German politician and Member of the European Parliament Martin Sonneborn.
- Martin Sonneborn stellt seinen Vater als Kandidaten auf. Der Spiegel. February 9, 2017.
- Martin Sonneborn: Mein Vater könnte das. Frankfurter Allgemeine Sonntagszeitung, February 5, 2017
- Engelbert Sonneborn on Twitter