Frederick George Unico Williams Bentinck (1888-1942) (1888–1942) Parents Wilhelm Aldenburg-Bentinck, 6th Graf Bentinck Baroness Maria Cornelia van Heeckeren van Wassenaer Children Siblings Mechtild von Bentinck Countess Isabella von Bentinck William Frederick Charles Henry Bentinck, 7th Graf Bentinck
