Oda-Mathilde von Garmisson (born 1935) (1935–2017) Parents Baroness Oda von Bouwald Hilmar von Garmisson Children Otto Prinz von Hessen-Philippsthal-Barchfeld Wilhelm Erbprinz von Hessen-Philippsthal-Barchfeld Partners Wilhelm, Landgrave of Hesse-Philippsthal-Barchfeld