A wealthy Haarlem merchant, frequent customer at the ten Booms’ shop, and genial family friend. As Corrie starts to shelter Jews in her house, she discovers that Pickwick is at the center of the Dutch resistance network. In this capacity, Pickwick provides much-needed contacts and help, like introducing Corrie to the architect who constructs the secret room in her house. Pickwick is arrested by the Gestapo at the same time as Corrie and her family; although he undergoes imprisonment and abuse, he survives the war and eventually returns to Haarlem.