Thirty-nine-year-old Prince Philippe surprised the people of Belgium on Friday, September 10, 1999, by announcing his engagement to a young Belgian aristocrat, Mathilde d'Udekem d'Acoz. Through both her parents the new Queen of the Belgians is a descendant of Belgian nobility and Polish nobility such as … Since midnight she'd been made a royal princess in her own right, and her father and siblings had received the titel of count or countess. Count Patrick d'Udekem d'Acoz, father of Belgium's Princess Mathilde, died on 25 September 2008 at the age of 72. Mathilde has four younger siblings – Marie-Alix, Elisabeth, Hélène, and Charles-Henri. Mathilde d’Udekem d’Acoz was born on January 20, 1973, in Uccle, Belgium, the daughter of Jonkheer Patrick d’Udekem d’Acoz and Countess Anna Maria Komorowska. Mathilde Fulmine Marie (born d'UDEKEM d'ACOZ) was born on month day 1893, at birth place, to Arnold Gérard François Xavier Ghislain d'UDEKEM d'ACOZ and Thérèse Marie Josèphe d'UDEKEM d'ACOZ (born du BOIS de VROYLANDE). Mathilde Marie Christine Ghislaine van Belgie (born d' Udekem d' Acoz) was born on month day 1973, at birth place, to Patrick Paul François Xavier Marie Ghislain d' Udekem d' Acoz. Finally at about 13:30 we saw the bride and groom again when they left the cathedral. Tim Graham Photo Library via Getty Images . Matilde Maria Cristiana Gislaine d'Udekem d'Acoz (Uccle, 20 de janeiro de 1973) é a esposa do rei Filipe e rainha consorte da Bélgica desde 2013. Ela é a primeira consorte belga a ter nascido na Bélgica. Arnold was born on July 9 1861, in Wanfercée-Baulet, Belgique. In 1999 Philippe married Mathilde d’Udekem d’Acoz, daughter of a was Count Patrick d’Udekem d’Acoz and Polish Countess Anna Maria Komorowska. Mathilde, a 26-year-old speech therapist, was introduced to the nation in a press conference a few days later. Mathilde d'Udekem d'Acoz et le prince Philippe de Belgique, à Bruxelles le 4 décembre 1999, jour de leur mariage, avec leurs enfants d'honneur. Photo: Albert Philip van der Werf (NETHERLANDS OUT) For Mathilde the witnesses were: Hélène Countess d’Udekem d’ Acoz, Agnès du Parc and Helene Duchess in Bavaria. The mass was finished with the Brabanconne, the national anthem of Belgium. Patrick was born on April 28 1936, in Ukkel, België. Mathilde d'Udekem d'Acoz and her father, Patrick d'Udekem d'Acoz left the royal palace where Mathilde had been getting ready since 6:00. Belgium's Prince Philippe and Princess Mathilde arrive for the funeral ceremony of Count Patrick d'Udekem d'Acoz at the Eglise Saint-Pierre in Bastogne, Belgium, 30 September 2008. The couple had dated in secret for three years.