[6] She spent most of her childhood between the Thurn und Taxis' Duino Castle, in Trieste, and the Château de Belœil, in Belgium.

[7] Margarete married Prince Gaetano of Bourbon-Parma, the last child and son of Robert I, Duke of Parma and his second wife Infanta Maria Antónia of Portugal on 29 April 1931: the wedding took place in Paris, in the estate of Cardinal Archbishop Verdier whose residence had been transformed into a chapel.

[10][self-published source] Her acquired aunt Princess Eugenie of Greece and Denmark (her uncle Raimundo, 2nd Duke of Castel Duino's wife), gave her an amethyst necklace on the occasion of her wedding.

[12][13] In the 1930s, she organized and attended progressive events sponsored by the House of Thurn and Taxis and by her father, in Trieste, always accompanied by her husband.

[14] She attended the wedding of Princess Maria Francesca of Savoy and Prince Louis of Bourbon-Parma in January 1939 at Palazzo del Quirinale, Rome.