
Her first husband was the English banker Thomas Troubridge, younger brother of Sir Peter Troubridge, 6th Baronet. Along with her mother and brother, Baron Friedrich (Fred) von Reibnitz, she moved to Australia where she was educated at Kincoppal School later the Freiin Marie-Christine and her mother established a beauty salon, while Fred von Reibnitz (now living in Canberra) joined the Australian Public Service. Her father was a Nazi party member serving as a Sturmbannführer (Major) in the SS during the Second World War he settled at Maforga, Mozambique after his divorce. Through her mother, Princess Michael is descended from Diane de Poitiers, Henry II of France's mistress, and Catherine (de' Medici), Queen of France, as well as from the celebrated painter Peter Paul Rubens. Princess Michael's elder sister was Margarita (born 18 January 1924) by her father's first marriage to Margherita, Countess von Seherr-Thoß. Princess Michael is the younger daughter of Baron Günther Hubertus von Reibnitz (Freiherr) by his wife Countess Maria-Anna-Carolina-Franziska-Walpurga-Bernadette, daughter of Count Friedrich Szapáry von Muraszombath, Széchysziget und Szapár, the Austro-Hungarian Ambassador to Saint Petersburg at the outbreak of World War I.

She was born just prior to the defeat and the end of Nazi Germany and World War II in Europe, near the family estates of her Austrian maternal grandmother, Princess Hedwig von Windisch-Graetz the expulsion of Germans resident in Czechoslovakia followed later that year. Princess Michael of Kent was born on 15 January 1945, in Karlsbad, a town then in German-populated Sudetenland and now known as Karlovy Vary in the Czech Republic.
