Marriage
While on work assignment in Rio de Janeiro in September 1988, Marie attended a dinner hosted by Princess Isabel of Brazil (born 1944), where she met their mutual cousin Prince Gundakar of Liechtenstein (grandson of Prince Alfred Roman of Liechtenstein). Fifth cousins as great-great-great grandchildren of Maximilian I of Bavaria, both also descend from France's "Citizen-King", Louis Philippe d'Orléans.
Marie and Gundakar encountered each other again in November 1988 at the wedding of two more mutual cousins, Duchess Mathilde of Wurttemberg and the Hereditary Count Erich von Waldburg-Zeil. More meetings in Europe followed. On 11 February 1989 the couple were received by Marie's paternal grandfather, Monseigneur the Count of Paris, at his Chantilly estate, after which the couple's betrothal was announced to the media (the fiancée's father had been informed of the engagement earlier that day by a hand-delivered letter written by Marie's mother, Marie Thérèse of Württemberg, Duchess of Montpensier.
The wedding date being set for 29 July 1989, the engagement initially triggered familial reconciliation. Although the Count of Clermont stated in a 12 May 1989 Point de Vue interview that it had been three years since he had seen Marie, he and his second wife, Michaela Cousino, had been welcomed for the first time to the home of his mother, the Countess of Paris, that day: Clermont further acknowledged to the press that, Marie having written to invite him to her wedding, he looked forward to conducting her to the altar, rumours to the contrary notwithstanding. At the engagement party held the next day at the Palais Pallavicini, the Vienna home of the fiancé's parents, photographs were taken, and would later be published, showing Clermont speaking cordially with his daughter, sons, former wife and future son-in-law.
However, it was on this occasion that Clermont learned that he would not be escorting Marie to her bridesgroom during the wedding. Meanwhile, the Duchess of Montpensier had sent out invitations to the wedding in her name alone, omitting not only mention of Marie's father, but also of the Count of Paris, the head of the dynasty who, until then, had largely sided with the Duchess de Montpensier in opposition to the dissolution of his son's first marriage. Moreover, the duchess had also rebuffed Monseigneur's offers to host the wedding at the Chapelle royale de Dreux or to commission the wedding gown from a major French haute couturier.
These decisions prompted father and son to join in calling for a familial boycott of the nuptials. Her grandfather reportedly called the decision "treason", as tradition dictated that a French princess of the Blood Royal weds in France unless the groom is the ruler or heir apparent of a foreign realm. The conflict was aggravated by divided family loyalties: instead of Dreux, the wedding was to be held at Friedrichshafen Castle in Germany, childhood home of the bride's mother. Princess Marie spent much time there in her youth during visits to her maternal grandparents. However, because her mother's brother Carl, Duke of Wurttemberg, now lived there with his wife Diane d'Orléans, sister of the Count of Clermont and daughter of the Count of Paris, relatives and members of foreign royal dynasties found themselves being urged by two sets of siblings, long married to each other, to take opposite sides in the families' quarrel. Marie declared, "It's in that castle that I've been happiest. It's there and only there that I will be married".
The compromise she announced, to hold the mandatory civil wedding at Dreux and to follow with Catholic nuptials at Friedrichshafen, failed to appease the head of the Orléans family; Monseigneur refused to attend either ceremony, as did Clermont. Nonetheless, that was the arrangement which transpired. Marie wed her prince civilly at Dreux's city hall on 22 July 1989, and religiously in the castle church of Friedrichshafen, on 29 July 1989. Only eight persons, including bride and groom, attended the civil wedding in France (including the Duchess of Montpensier, her son Prince Jean, Duke of Vendôme, and a brother of the groom). Although 250 guests attended the ceremony in Germany, absent were the Count of Clermont, the Count of Paris and all but two of Clermont's eight siblings; the hostess Diane, Duchess of Wurttemberg, was present, as was her brother Prince Jacques, Duke of Orléans, and their mother, Madame the Countess of Paris.
This was the first marriage of a member of the House of Orléans into a reigning dynasty since the 1929 wedding of Princess Françoise of Orléans to Prince Christopher of Greece. Gundakar is a third cousin of his sovereign, Hans Adam II of Liechtenstein, and is in the line of succession to that principality's throne. Gundakar Albert Alfred Petrus of Liechtenstein is the eldest son of Prince Johann of Liechtenstein and Princess Clothilde of Thurn und Taxis. He has a twin sister, Princess Diemut, and five younger siblings.