From 1957 on
Big etchings after instruction by Paul Wunderlich.
Death of his friend and painter Reinhard Drenkhan.
Divorce of his first marriage. Second marriage to Birgit Sandner, divorced after some weeks.
From 1959 on
New beginning with drawing.
Marriage to Verena von Bethmann-Hollweg.
Birth of his son Philip.
From 1961 on
Development of a distinctive graphic style in fine line drawing.
First great exhibition in the Kestner-Gesellschaft in Hannover, later on in Darmstadt, Stuttgart, Düsseldorf, Lübeck and Basel/Switzerland. Breaking through of the artist Janssen: „A genius for a change“ (DIE ZEIT)
Catalogue of his work compiled by Carl Vogel.