William Frederick Charles Henry Bentinck, 7th Graf Bentinck (1880-1958) (1880–1958) Parents Wilhelm Aldenburg-Bentinck, 6th Graf Bentinck Baroness Maria Cornelia van Heeckeren van Wassenaer Children Sophie Mechhtild Marie Bentinck Isabelle van Aldenburg Bentinck Siblings Mechtild von Bentinck Frederick George Unico Williams Bentinck Countess Isabella von Bentinck Partners Adrienne Vegelin van Claerbergen