ニルス・ゲーゼ
In 1989, von Trier's mother told him on her deathbed that the man vonTrier thought was his biological father was not, and that he was the result of a liaison she had with her former employer, Fritz Michael Hartmann (1909–2000), who was descended from a long line of Danish classical musicians. Hartmann's grandfather was Emil Hartmann, his great-grandfather J. P. E. Hartmann, his uncles included Niels Gade and Johan Ernst Hartmann, and Niels Viggo Bentzon was his cousin. She stated that she did this to give her son "artistic genes".