Deletion of Engelbert Sonneborn

Comment: to German presidential election, 2017. With all due respect to my fellow Germans over at de-wiki, whose strict inclusion standards I often criticized, this is not really someone who is actually notable |outside this one event. He is mentioned in the election's article though, so redirecting makes more sense than deleting. Regards
Stance: merge
Cited policy: Wikipedia:Biographies of living persons (WP:BLP1E)