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Queen Mathilde's maiden name is d'Udekem d'Acoz. She was born into a Belgian noble family on January 20, 1973, in Uccle, Belgium. Her father, Count Patrick d'Udekem d'Acoz, was a diplomat, and her mother, Countess Anne Marie Komorowska, was a Polish countess. Queen Mathilde married King Philippe of Belgium in 1999 and became Queen of the Belgians in 2013.