Hans Alex Keilson (Dutch pronunciation: [ɦɑns ˈkɛilsɔn]; 12 December 1909 – 31 May 2011)[1] was a German-Dutch novelist, poet, psychoanalyst and child psychologist.

His wife gave birth to a daughter, Barbara, in the same year; she pretended the girl's father was a German officer to prevent prosecution.

Meanwhile, Keilson had moved in with a married couple in Delft, taking on a new identity as physician Dr. Van der Linden.

During this time, the Dutch resistance asked him to pay visits to Jewish children that had been separated from their parents after they had gone into hiding.

Much media attention, in both the United States and his adopted home country, the Netherlands, was given to the fact that Keilson received this acknowledgement at the age of 100.

Keilson was invited to Dutch talkshow De Wereld Draait Door, where he was interviewed by presenter Matthijs van Nieuwkerk.

Many more articles and interviews appeared in the following year, worldwide, and by then his Der Tod des Widersachers ("The Death of the Adversary") had been translated in 20 languages.